Background
Ibn Juzayy was the son of Abú-l-Qásim Muhammad Ibn Juzayy (the panegyrist of Abú-l-Hayyáy Yúsuf of Granada) who died in the Battle of Rio Salado in 1340. His father, Imām Abū al-Qāsim Muḥammad ibn Aḥmad ibn Juzayy al-Kalbī al-Gharnāṭī al-Mālikī (693/1294 – 741/1340), wrote many religious works such as his al-Qawanin al-Fiqhiyyah or "The Laws of Jurisprudence" a comparative manual of the jurisprudence of the four Sunni madhhabs (Maliki, Hanafi, Shafi'i, Hanbali) with emphasis on the Maliki school and notices of the views of the Ẓāhirī school and others