Those who transmitted from him were Abū ʿĪsā al-Tirmidhī, Abū ʿAbd al-Raḥmān al-Nasāʾī, Ibrāhīm ibn Abī Ṭālib, al-Ḥasan ibn Sufyān al-Fasawī, ʿAbd al-Raḥmān ibn Khirāsh, Abū Bakr ibn Abī Dāwūd, Abū Bakr ibn Khuzaymah, Muḥammad ibn Ḥamzah ibn ʿUmārah al-Iṣbahānī, Abū ʿAwānah al-Isfarāʾīnī, and ʿAbd Allah ibn Jaʿfar ibn Durustawayh the grammarian—his copyist and the last of his pupils.
Al-Fasawī said: “In the year nineteen (219 AH) I set out and heard ḥadīth from Adam ibn Abī Iyās, Abū al-Yamān, al-Wuḥāḍī, and the shaykhs of Palestine and Damascus. I also heard from Hishām ibn ʿAmmār in the year two and forty (242 AH).”
Al-Nasāʾī remarked, “He is sound; there is no problem with him.”
As for the name Juwwān, the Emir specified that its jīm is pronounced with a ḍammah (1).
It is related from the ḥāfiẓ Abū ʿAbd al-Raḥmān al-Nahāwandī that he heard al-Fasawī say, “I wrote from one thousand-odd shaykhs, every one of them reliable.”
I say: In his Mashyakha there are only about three hundred shaykhs—so where are the rest? Moreover, among those mentioned are a number who have been deemed weak.
The ḥāfiẓ Abū Isḥāq ibn Ḥamzah said: “I heard my father say, ‘I travelled to Yaʿqūb ibn Sufyān and stayed with him for six months. I told him, “My stay with you has grown long, and I have a mother.”’ He replied, ‘I closed the door behind my mother thirty years ago.’”
And Muḥammad ibn al-Qāsim ibn Bishr related: “I heard Muḥammad ibn Yazīd al-Fasawī, the perfumer, say: ‘I heard Yaʿqūb ibn Sufyān say: While I was on my journey in the quest of…’”