Abu ‘Ali Hasan ibn Muhammad (alive in 511/1117), son of Shaykh Tusī, studied his father’s works under him and after his father assumed the leadership of the Shī‘ī community. He studied under his father along with several other outstanding scholars, Arab and Iranian. They were ‘Abd al-Jabbar ibn ‘Abd Allah ibn ‘Ali Razī, Hasan ibn Husayn Babawayh Qummī, and Muhammad ibn Hibat Allah Warraq Tarabulusī. It has also been said that he stands at the head of the tradition of scholarly ijazahs amongst the Shī‘ah. The Shī‘ah would come from various regions to Najaf for acquisition of religious learning and studied under him. Most of the pupils of Abu ‘Ali mentioned by Muntajab al-Dīn have Iranian names. Among them were:
He narrates from Abu ‘Ali Tusī more than from anyone else and his narrations from him are more than fifty-five. Later scholars, even Arab, narrate from him, including Yahya ibn Bitrīq, author of al-‘Umdah.
Other Arab scholars also had a role in the training of Iranian scholars. One of them was Abu al-Fath Muhammad ibn ‘Ali Karajakī, pupil of Sharīf Murtada and Shaykh Tusī, who had several Iranian disciples, including Jafar ibn Da‘ī ibn Mahdī ‘Alawī Istarabadī, ‘Abd al-Rahman ibn Ahmad Nayshaburī, known as Mufīd, and Hasan ibn Husayn ibn Babawayh known as Hasaka, the grandfather of Muntajab al-Dīn, as well as his father, ‘Ubayd Allah ibn Hasan.
Among Arab scholars of this period is ‘Abd al-‘Azīz ibn Nihrīr, known as Ibn Barraj, the judge of Tripoli, who had Iranian pupils, among whom were the father and grandfather of Muntajab al-Dīn. It is clear that these scholars carried out the transfer of the learning of the Shī‘ī centres of Baghdad and Najaf to other Shī‘ī centres, including Halab.
 Al-Mamaqanī, Tanqīh al-Maqal (lithographed edition, 3 vols.), vol. 1, p. 306, no. 2627.
 Al-Tehranī, in the introduction to Shaykh Tusī’s Kitab al-ghaybah (Tehran: Maktabat al-Naynawa al-Hadīthah 1398), p. 11.
 Karīman, op. cit., vol. 1, p. 294.
 It should be noted that a generation of scholars belonging to the city of Jasb lived during the sixth/twelfth century. In the published version of Muntajab al-Dīn’s al-Fihrist, they are mentioned as ‘‘Hasitī.’’
 Muntajab al-Dīn, op. cit., p. 107.
 See Ibn Hamzah, Al-Thaqib fī al-Manaqib (Qum: 1411) ed. NAbul ‘Alwan, Introduction, pp. 11-13.
 Muntajab al-Dīn , op. cit., p. 107, no. 388.
 Afandī, op. cit., vol. 5, pp. 17-18.
 ‘Imad al-Dīn Muhammad ibn Abu al-Qasim Tabarī, Basharat al-Mustafa (Najaf: Maktabat al-Haydariyyah, 1383).
 Yusuf Karkush, Tarīkh al-Hillah (Qum: Manshurat al-Radī, 1413), vol. 2, p. 13.
 Karīman, op. cit., vol. 1, pp. 290-29.
 Muntajab al- Dīn, op. cit., p. 74, no. 214.
 Ibid., p. 75, no. 219.
 Ibid., p. 46, no. 46.
 Ibid., p. 77, no. 228.
 Ibid., p. 46, no. 46.