Yosef HaRo’eh - Account of his life
Yosef Ben-Avraham HaKohen (Yosef HaRo’eh / Yusuf al-Basir) is one of the most important Karaite
philosophers of the older period. Second perhaps only the Ya‘aqov al-Qirqisani
in his acheivements. Of his numerous philosophical and legal works, only a
portion have been preserved to this day. He, like many of his predecessors
wrote a Sefer Miswot (Book of Precepts). He also wrote a work entitled the
Kitab al-Istibsar which is a treatise on the festivals.