The genealogy of supervision is the largest encyclopedia in the genealogy and news of the tribes. The world's libraries are only two copies, in Rabat and Istanbul. He wanted to supervise: Mudar Al -Arabiya tribes, including the tribes of the Prophet Muhammad from Bani Abdul -Muttalib, the Bani Abdul -Shams clan, the kings, poets, the Umayyad caliphs and the Abbasids.