'Abd al-Warith ibn Sufyan

'Abd al-Warith b. Sufyan b. Jabrun b. Sulayman of Cordoba (317–395 AH) was one of the teachers from whom Ibn 'Abd al-Barr transmitted most, and the channel through which he received the learning of Qasim b. Asbagh. ¹

He began studying with Qasim b. Asbagh in 333 AH and heard most of his transmissions, becoming the most reliable authority on him and his most constant companion. ¹ Al-Humaydi quotes Ibn 'Abd al-Barr as saying that he was among those who kept closest to Qasim and the best known in Cordoba for his company — it was said that hardly anything read to Qasim escaped him — and that he had seen many of Qasim's original copies and found 'Abd al-Warith's hearing recorded in all of them. ¹

Ibn 'Abd al-Barr read with him Qasim b. Asbagh's Musannaf on the Sunan, and Ibn Qutayba's al-Ma'arif and Sharh Gharib al-Hadith, as al-Humaydi records. ¹