It is said that when he returned from Iraq he went in to Ibn Wahb and said, “These are the books of Abu Hanifa.”
He asked him to issue rulings on them according to the school of Malik, but Ibn Wahb refused out of scrupulous piety. So Asad took the books to Ibn al-Qasim, who replied in accordance with what he had memorised from Malik and with what he knew of Malik’s legal principles. These questions came to be known as the Asadiyya (1).

In Ifriqiya he attained leadership and authority; people took knowledge from him and studied jurisprudence under him.
Sahnun ibn Saʿid transmitted from him; later Sahnun travelled with the Asadiyya to Ibn al-Qasim and presented it to him. Ibn al-Qasim said, “There are matters here that must be amended,” and he responded to certain sections. He then wrote to Asad ibn al-Furat: “Collate your books with those of Sahnun.” Asad did not do so, and the matter weighed heavily on him. News of this reached Ibn al-Qasim, who was grieved and said, “O Allah, do not bless the Asadiyya.” Consequently, it is rejected among the Mālikīs (2).

Abu Zurʿah al-Rāzī said: “Ibn al-Qasim possessed about three hundred volumes of questions from Malik. Asad, who was from the Maghrib, had asked Muhammad ibn al-Hasan about certain issues, then asked Ibn Wahb, but he did not answer him. So he came to Ibn al-Qasim, who broadened the discussion for him and answered with what he had from Malik and with his own judgement. He said, ‘People are already speaking about these questions’ (3).”

ʿAbd al-Rahim the Ascetic said: “Asad arrived among us, and I asked him, ‘What do you command me to follow: the view of Malik or the view of the people of Iraq?’ He replied, ‘If you seek the Hereafter, then stay with Malik.’”