Imam Uthman bin Ali was from Zayla, which is in contemporary Somali. He is best known for his Tabyeen al-Haqaaiq. Which is a commentary on Kanz al-Daqaiq, the celebrated Matn (primer) of Imam al-Nasafi.
Imam Fakhr al-Deen al-Zaylai must not be confused with Imam Jamal al-Deen al-Zaylai. Both are known as Zaylai and are from the same era. However, Imam Jamal al-Deen is better known for his Hadith works.
Imam Fakhr al-Deen passed away 743 Hijri.
