6-21 Muhammad ibn al-Hassan ibn Ahmad ibn al-Walid narrated that Muhammad ibn al-Hassan al-Saffar quoted Ahmad ibn Muhammad ibn Isa, on the authority of his father, on the authority of Sa'eed ibn Jinaah who linked it up through a chain of narrators to Aba Abdullah who said, “Six (tribes) are not modest: the Sindhi, the Zanji, the Turkish, the Kurdish, the Khuzestani and those who reside in the hills of Ray.”