6-21 Muhammad ibn al-Hassan ibn Ahmad ibn al-Walid - may God be pleased with him - narrated that Muhammad ibn al-Hassan al-Saffar quoted Ahmad ibn Muhammad ibn Isa, on the authority of his father, on the authority of Saéed ibn Jinah who linked it up through a chain of narrators to Aba Abdullah as-Sadiq (MGB), “Six tribes are not modest: the Sandi, the Zanji, the Turkish, the Kurdish, the Khuzestani and those who reside in the hills of Ray.”