93. Ali bin Shira
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions and said he was reliable.[560][435]

94. Ali bin Abdul Ghaffar
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions,[561][436] and so did al-Barqi.[562][437]

95. Ali bin Abdullah
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions.[563][438]

96. Ali bin Abdullah bin Ja'far al-Himyari
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions.[564][439]

97. Ali bin Abdullah az-Zubayri
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions.[565][440]

98. Ali bin Ubaydillah
Al-Barqi mentioned him as one of Imam al-Hadi's companion,[566][441] and so did Sheikh at-Tusi.[567][442]

99. Ali bin Amr al-Attar al-Qazwini
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions,[568][443] and so did al-Barqi. He was one of the narrators who narrated the tradition of the announcing of the Imamate of Imam Abu Muhammad al-Askari (a.s.) by his father after him.[569][444]

100. Ali bin Muhammad bin Ziyad as-Saymari
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions.[570][445] The author of Mu'jam Rijal al-Hadith saw that Ali bin Ziyad as-Saymari mentioned before and this Ali bin Muhammad as-Saymari were but the same man and not two.[571][446]

101. Ali bin Muhammad bin ash-Shuja' an-Naysaburi
He narrated traditions from Imam al-Hadi (a.s.).[572][447]

102. Ali bin Muhammad bin Shirah al-Qashani
Sheikh at-Tusi said he was weak from Isfahan from the children of Ziyad the mawla of Abdullah bin Abbas from aal Khalid bin al-Azhar.[573][448] Al-Barqi mentioned him as Ali bin Muhammad al-Qashani and said he was from Imam al-Hadi's companions. An-Najashi said, 'He was a virtuous jurisprudent of too many traditions. Ahmad bin Muhammad bin Eesa criticized him and said he heard from him denied beliefs. He had written some books such as "Prayer", and "al-Jami'" which was a big book on jurisprudence.'

103. Ali bin Muhammad al-Minqari
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions.[574][449] An-Najashi said he was reliable from Kufa and had written a book on rarities.[575][450]

104. Ali bin Muhammad an-Nawfali
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions,[576][451] and so did al-Barqi.[577][452] He narrated from Imam al-Hadi (a.s.) and Ahmad bin Muhammad narrated from him.[578][453]

105. Ali bin Mahziyar al-Ahwazi ad-Dawraqi
He was from the prominent ulama' and one of the famous disciples of Imam al-Hadi (a.s.). Here, we talk in brief about him:

His worship
Ali bin Mahziyar was unequaled in his piety and obedience. Narrators said that from his worshipping was that when the sun rose, he prostrated himself to Allah and he did not raise his head from prostration until he prayed Allah for one thousand of his brothers as he prayed for himself. On his forehead there was like the knee of a camel because of his much prostration for Allah.[579][454]

Imam al-Jawad praises him
Imam al-Jawad (a.s.) praised Ali bin Mahziyar on some occasions. Once, he wrote him a letter saying, 'O Ali, I have tested you and tried you in loyalty, obedience, service, reverence and performance of your duties and if I say that I have not seen anyone like you, I might be truthful. May Allah reward you with the Gardens of Paradise. Neither your position nor your services in the hot and cold and in the day and night have been unknown to me. I pray Allah, when He will gather the creatures on the Day of Punishment, to have enviable mercy on you. He is the Hearer of prayer.'[580][455]

His works
He had written a good collection of books showing his abundant knowledge. From among these books are the following: Wudu', Prayer, Zakat, Fasting, Hajj, Divorce, Punishments, Blood Money, at-Tafsir, The Virtues, Setting Slaves Free and Management, Gains, Defects, Supplication, Courtesy and Chivalry, al-Mazar (shrine), Refuting the excessive, Recommendations, Inheritances, Khums, Witnesses, the Virtues of the Believers, Heroism, Reservation (Taqiyyah), Hunting and Slaughtering, Asceticism, Drinks, Vows and Oaths and Penances, Letters (huroof), al-Qa'im (al-Mahdi), Good Tidings, Prophets, Rarities, the Letters of Ali bin Asbat, and other books. Most of these books are on jurisprudential subjects which show that he was one of the great jurisprudents in Islam.

His narrations
Ali bin Mahziyar narrated about 437 traditions from Imam al-Jawad (a.s.), Imam al-Hadi (a.s.), and others.[581][456] He was from the pillars of the Shiite culture and was nonesuch among the scholars and ulama' of his age.

106. Ali bin Yahya ad-Dahqan
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions and said he was accused of excessiveness.[582][457]

107. Eesa bin Ahmad
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions,[583][458] and narrated from him many traditions, from which was this one: 'Abul Hasan Ali bin Muhammad al-Askari (al-Hadi) told me from his father from his fathers that (Imam) Ali (a.s.) said, 'The messenger of Allah (blessing and peace be upon him) said (to Ali): let him, who likes to meet Allah safe and pure, and the supreme horror not to grieve him, follow you and your sons al-Hasan, al-Husayn, Ali bin al-Husayn, Muhammad bin Ali, Ja'far bin Muhammad, Musa bin Ja'far, Ali bin Musa, Muhammad, Ali, al-Hasan, and then al-Mahdi who is the last of them.'[584][459]

108. Faris bin Hatim al-Qazwini
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions (or just a narrator of his traditions) and added that he was cursed, excessive.[585][460] Al-Kashshi mentioned that Nasr bin as-Sabah said, 'Imam al-Hadi (a.s.) cursed al-Hasan bin Muhammad known as ibn Baba, Muhammad bin Nusayr an-Namiri, and Faris bin Hatim al-Qazwini.'[586][461]
Many traditions were related to Imam al-Hadi (a.s.) on cursing this man and warning the Shia from associating with him because he was a source of deviation and error. Here are some of those traditions:
1. Urwah wrote to Imam al-Hadi (a.s.) about Faris and he said, 'Deny what he says and disgrace him. May Allah exclude and disgrace him. He is a liar in all that he claims. But keep yourselves away from arguing with him or consulting with him. Do not give him way for evil. May Allah save us from his burden and the burden of his like.'[587][462]
2. Ibrahim bin Dawud al-Ya'qubi wrote to Imam al-Hadi (a.s.) about him and Imam al-Hadi (a.s.) replied, 'Pay him no attention, and when he comes to you, dishonor him!'[588][463]
We shall mention his deviant opinions when we shall study the age of the Imam in a coming chapter.
Anyhow, Imam al-Hadi (a.s.) ordered his followers to kill this deviant, misguiding man when saying, 'Who will relieve me by killing him and I assure Paradise for him by the will of Allah?'[589][464]

109. Al-Fath bin Yazid al-Jirjani
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions,[590][465] and so did al-Barqi.[591][466] An-Najashi said that he was the author of "the Questions" or might be "the Answers of the Questions" -as we think- that Imam al-Hadi (a.s.) was asked about.

110. Al-Fadhl bin Shathan an-Nayshaburi
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions.[592][467] He was from the great ulama' and the most prominent men of the Islamic intellect in his time. He studied and dealt with different sciences and arts and wrote books on them. Here we shall mention, in brief, some points on him:

Imam al-Hasan praises him
Imam al-Hasan al-Askari (a.s.) praised al-Fadhl bin Shathan. When once, one of al-Fadhl's books was shown to Imam al-Askari (a.s.), he read some of it, prayed Allah to have mercy on al-Fadhl, and said, 'I envy the people of KhurHasan the being of al-Fadhl bin Shathan among them.' Once again, he read another book of al-Fadhl, prayed Allah three times to have mercy on al-Fadhl, and said about the book, 'It is true that it should be acted according to it.'[593][468]

Confuting the opponents
Al-Fadhl took upon himself to defend his beliefs and refute the spuriosities raised against his cult. He said, 'I am a successor of those who passed away. I met Muhammad bin Abu Umayr, Safwan bin Yahya and others and took knowledge from them since fifty years ago. Hisham bin al-Hakam passed away, may Allah have mercy on him, and Younus bin Abdur-Rahman was his successor. He refuted the dissenters. Then Younus bin Abdur-Rahman passed away and left no successors except as-Sakkak who refuted the dissenters until he left to the better world. I am the successor after them, may Allah have mercy on them.'[594][469]
He was the successor of those great scholars who struggled and defended their high principles that the infallible Imams of the Ahlul Bayt (a.s.) had adopted.

His works
This great scholar wrote on different sciences such as jurisprudence, tafsir, theology, philosophy, linguistics, logic, and other fields of knowledge. The books he had written were more than one hundred and eighty.[595][470] Some of them were mentioned by Sheikh at-Tusi,[596][471] an-Najashi,[597][472] ibn an-Nadim,[598][473] and others.

111. Al-Fadhl bin Kathir al-Baghdadi
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions.[599][474]

112. Al-Fadhl bin al-Mubarak
He narrated traditions from Imam al-Hadi (a.s.) and Muhammad bin Eesa al-Ubaydi narrated from him.[600][475]

113. Al-Qassim ash-Sha'rani al-Yaqtini
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions and said he was accused of excessiveness.[601][476]

114. Al-Qassim as-Sayqal
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions,[602][477] and so did al-Barqi. He narrated from Imam ar-Ridha (a.s.) and Imam al-Jawad (a.s.), and Muhammad bin Abdullah al-Wasiti narrated from him.[603][478]

115. Kafur al-Khadim
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions,[604][479] so did ibn Dawud and said he was reliable.[605][480]

116. Muhammad bin Abu Tayfur al-Mutatabbib
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions.[606][481]

117. Muhammad bin Ahmad bin Ibrahim
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions.[607][482]

118. Abu Ali Muhammad bin Ahmad al-Mahmudi
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions.[608][483] Al-Kashshi said, 'I found in the book of Abdullah ash-Shathani that he had written with his handwriting: "I heard al-Fadhl bin Hashim saying, 'Al-Mahmudi mentioned to me that he had performed the hajj many times. I asked him about their number but he did not tell me.
He said, 'I have been endowed with much good (money), praise be to Allah.'
I said to him, 'Do you perform the hajj for yourself or for others[609][484]?'
He said, 'After the obligatory hajj of Islam, I perform the hajj for the messenger of Allah (SwT) and his progeny, and for the guardians of Allah, the believing men, and believing women as far as Allah has permitted me.'
I said to him, 'What do you say in your hajj?'
He said, 'I say: O Allah, I began for Your messenger Muhammad (blessing be on him and on his progeny) and I made my reward from You and him for Your pure guardians (peace be upon them) and donated my reward from them for your faithful slaves who believe in Your Book and the Sunna of Your Prophet (blessing be on him and on his progeny.'[610][485]
This shows his goodwill and benevolence, and that the education of the pure Imams (a.s.) to their companions has produced such perfect persons.

119. Abul Hasan Muhammad bin Ahmad bin Ubaydillah bin al-Mansur
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions.[611][486]

120. Muhammad bin Ahmad bin Mutahhar
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions.[612][487] He narrated from Imam al-Hadi (a.s.), and Abdullah bin Ja'far narrated from him.[613][488]

121. Muhammad bin Ahmad bin Mihran
Al-Barqi mentioned him as one of Imam al-Hadi's companions.[614][489]

122. Muhammad bin Isma'il as-Saymari al-Qummi
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions.[615][490]

123. Muhammad bin Jazzak al-Jammal
He was reliable. Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions.[616][491] Ibn Shahrashub said he was from the trustworthy companions of Imam al-Hadi (a.s.).

124. Muhammad bin al-Hasan bin Shammun al-Basri
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions.[617][492] An-Najashi said, 'He was a Waqifite[618][493] and then was excessive. He was very weak and of bad beliefs.He had written "as-Sunan wel Aadab wa Makarim al-Akhlaq", and "al-Ma'rifah".'[619][494]
Al-Kashshi mentioned from him his saying, 'I wrote to Abu Muhammad (Imam al-Askari) complaining of poverty and then I said to myself: has Abu Abdullah (Imam as-Sadiq) (a.s.) not said, 'Poverty with us (the Ahlul Bayt) is better than wealth with our enemy, and being killed with us is better than living with our enemy.' The reply to my letter came saying, 'Allah the Almighty tries our followers, when their sins increase, by poverty, and He may forgive many (of sins), and it is as your self said to you: poverty with us is better than wealth with our enemy. We are a shelter for whoever resorts to us and a light for whoever seeks light, and preservation for whoever resorts to us. Whoever loves us will be with us in the highest position, and whoever deviates from us will be in Fire.' Abu Abdullah (as-Sadiq) said, 'You acknowledge that your enemy will be in Fire and do not acknowledge that your guardian will be in Paradise! Nothing prevents you from that but weakness.'[620][495]
He died when he was one hundred and twenty years. It was said that he narrated from eighty men of the companions of Imam Abu Abdullah as-Sadiq (a.s.).[621][496]

125. Muhammad bin al-Hasan bin Abu al-Khattab az-Zayyat
He was reliable man from Kufa. Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions.[622][497] An-Najashi said, 'He was a lofty man from our companions. He was respectable, reliable, and notable. He narrated many traditions and it was depended on his narrations. He had written good books such as "at-Tawhid", "al-Ma'rifah wel Bada'", "ar-Radd ala Ahl al-Qadar", "al-Imamah", "al-Lu'lu'ah", "Wasaya al-A'immah", "Rarities".'[623][498]

126. Muhammad bin Hamza al-Qummi
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions.[624][499]

127. Muhammad bin al-Husayn al-Fihri
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions and added that he was cursed.[625][500]

128. Muhammad bin al-Husayn
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions and said he was from Ahwaz.[626][501]

129. Abul Abbas Muhammad bin Khalid ar-Razi
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions.[627][502]

130. Muhammad bin Raja' al-Khayyat
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions,[628][503] and so did al-Barqi.

131. Muhammad bin ar-Rayyan bin as-Salt
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions and said he was reliable.[629][504] An-Najashi said there were questions between him and Imam Abul Hasan al-Hadi (a.s.).[630][505]

132. Muhammad bin Sa'eed bin Kulthum al-Marwazi
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions and said he was a theologian.[631][506] Al-Kashshi mentioned from Nasr bin as-Sabah that Muhammad bin Sa'eed al-Marwazi was from the prominent theologians in Naysabur.[632][507]

133. Muhammad bin Sulayman al-Jallab
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions.[633][508]

134. Muhammad bin Şayfi al-Kufi
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions.[634][509]

135. Muhammad bin Abdul Jabbar
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions and said he was reliable from Qum.[635][510]

136. Muhammad bin Abdur-Rahman al-Hamadani an-Nawfali
Al-Barqi mentioned him as one of Imam al-Hadi's companions and said he had letters with Abul Hasan al-Hadi (a.s.).[636][511]

137. Muhammad bin Abdullah bin Mihran al-Karkhi
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions and said he was accused of excessiveness and weakness.[637][512] An-Najashi said, 'He was excessive, a liar, irreligious, and unreliable and was famous for that. He had some books like "al-Mamdohin wel Mathmomin; the praised and the dispraised", "Maqtal (murder of) Abul Khattab", "Manaqib (virtues of) Abul Khattab", "al-Malahim; battles or heroisms", "at-Tabsirah; enlightenment", "al-Qibab; domes", and "an-Nawadir; rarities" which was the nearest of them to the truth whereas the others were full of falsehood.'[638][513]

138. Muhammad bin Abdullah an-Nawfali al-Hamadani
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions.[639][514]

139. Muhammad bin Ubaydillah at-Tahi
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions.[640][515]

140. Muhammad bin Ali bin Eesa al-Ash'ari al-Qummi
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions.[641][516]
An-Najashi said, 'Muhammad bin Ali was a notable man in Qum and the emir on it appointed by the king. So was his father. He had questions with Abu Muhammad al-Askari (a.s.).'[642][517]

141. Muhammad bin Ali bin Mahziyar
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions and said he was reliable.[643][518] Ibn Tawus said he was from the well-known deputies and babs whom the Twelver Shia, who believed in the Imamate of al-Hasan bin Ali, did not disagree on.[644][519]

142. Muhammad bin Eesa bin Ubayd al-Yaqtini
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions and said he was weak.[645][520]
Al-Kashshi mentioned that he had written some books like "al-Imamah", "al-Wadhih al-Makshuf fir-Rad ala Ahl al-Wuquf", "Bu'd al-Isnad", "Qurb al-Isnad", "al-Wasaya", "al-Lu'lu'", "al-Masa'il al-Muharramah", "adh-Dhiya'", "Dhara'if", "at-Tawqi'at", "at-Tajammul wel-Muru'ah", "al-Fay' wel Khums", "ar-Rijal", "az-Zakat", "Thawab al-A'mal", and "an-Nawadir".[646][521]

143. Muhammad bin al-Faraj ar-Rakhji
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions.[647][522] There were firm communications and many correspondences between him and Imam al-Hadi (a.s.). Here are some of the letters that were between them:
1. Al-Kashshi mentioned that Muhammad bin al-Faraj said, "I wrote to Abul Hasan (al-Hadi) (a.s.) asking him about Abu Ali bin Rashid, Eesa bin Ja'far bin Aasim, and ibn Band, and he replied to me saying, 'You have mentioned bin Rashid, may Allah have mercy on him. He lived happy and died as a martyr.' And he prayed Allah for ibn Band and bin Aasim."[648][523]
2. Al-Kulayni mentioned that Ali bin Muhammad an-Nawfali said, "Muhammad bin al-Faraj said to me, 'Abul Hasan (al-Hadi) wrote to him, 'O Muhammad, manage your affairs and be careful!" My affairs were managed and I was careful and I did not know what for he wrote to me so until an agent from the government came, tied me, and carried me from Egypt after confiscating all what I possessed. I were in prison for eight years and then a book came to me from him (from Imam al-Hadi) in prison saying, 'O Muhammad, do not reside in the Western District!' I read the book and said to myself: he writes to me so, though I am in prison! It is wonderful!! After a little time I was set free.'
Then Muhammad bin al-Faraj wrote to him ( to Imam al-Hadi) asking about his properties and he replied that they would be given back to him. When Muhammad went to al-Askar, he wrote to him about giving his properties back to him but he died before that."[649][524]
This letter shows that the Imam (a.s.) trusted and assisted Muhammad. When Muhammad became ill, Imam al-Hadi (a.s.) sent him a garment. He put the garment under his head and when he died, he was enshrouded with it.

144. Muhammad bin al-Fadhl
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions,[650][525] and so did al-Barqi.

145. Muhammad bin al-Fadhl al-Baghdadi
He narrated from Imam al-Hadi (a.s.), and Abdullah bin Ja'far al-Himyari narrated from him.[651][526]

146. Abu Abdullah Muhammad bin al-Qassim bin Hamza bin Musa al-Alawi
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions.[652][527]

147. Muhammad bin Marwan al-Jallab
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions and said he was reliable,[653][528] and so did al-Barqi.

148. Muhammad bin Marwan al-Khattab
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions.[654][529]

149. Muhammad bin Musa bin Furat
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions.[655][530]

150. Muhammad bin Musa ar-Rab'iy
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions.[656][531]

151. Muhammad bin Yahya bin Daryab
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions.[657][532]

152. Masqalah bin Isaaq al-Qummi al-Ash'ari
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions.[658][533]

153. Mu'awiya bin Hakeem bin Mu'awiya bin Ammar al-Kufi
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions.[659][534]
An-Najashi said about him, 'He was reliable, notable from the companions of Imam ar-Ridha (a.s.). Abu Abdullah al-Husayn said, 'I heard our sheikhs saying: Mu'awiya bin Hakeem narrated twenty-four traditions on usul, and had written some books like "Divorce", "Menstruation", "Obligations", "Marriage", "Penalties", "Blood Monies", and a book of rarities.'[660][535]

154. Mansur bin al-Abbas ar-Razi
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions.[661][536] An-Najashi said, 'His state was uncertain. He had a big book on rarities.'[662][537]

155. Musa bin Dawud al-Ya'qubi
Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions.[663][538] He was a Twelver Shia but unknown.

156. Musa bin Umar bin Bazee' the mawla of al-Mansur
He was reliable. Sheikh at-Tusi mentioned him as one of Imam al-Hadi's companions,[664][539] and said he had a book on rarities.[665][540]