The Kitab al-Athar of Imam Abu Hanifah in the narration of Imam Muhammad Ibn al-Hasan ash-Shaybani. The Kitab al-Athar was the first book composed in Islam after the generation of the Companions. Al-Imam al-A’zam Abu Hanifah Nu’man ibn Thabit wrote it. It comprises Ahadith that connect directly back to the Messenger of Allah sallallahu 'alayhi wasallam (marfu’), those which stop short at a Companion or one of the Followers (mawquf) and those which are attributed to the Messenger sallallahu 'alayhi wasallam directly by one of the Followers or Followers of the Followers without attribution to a Companion (mursal). His companions Imam Abu Yusuf, Imam Zufar, Imam Muhammad, Imam al-Hasan ibn Ziyad, Imam Hammad ibn Abi Hanifah the Imam’s son, Hafs ibn Ghiyath and others narrated it from him. In the version before us, Imam Muhammad, himself a mujtahid, narrated each tradition from Imam Abu Hanifah and then followed each with some explanatory material, sometimes confirming and occasionally differing with his Imam.