Progress made by humanity in the Near East and Europe suffered a severe setback after the fall of the Roman empire, and the 6th century saw Europe almost relapse into barbarism once again. Hardly could any Christian read or write; the priestly class enforcing on their followers the motto of Pope Gregory that 'ignorance is the mother of devotion', demanded blind obedience to their dogmas. Likewise in Asia, the Hinduism, Buddhism and other cults had deteriorated, becoming mere bundles of outward forms and ceremonial worship.
"Ismael, the son of Abraham had a son, Kaidar whose progeny spread over the Arabian province of Hijaz. Adnan, to whom the Prophet traced his descent, was also a scion of Ismael in about the fortieth generations. Further down, in the ninth descent from Adnan, there followed Nadar bin Kinana. Another descent in the genealogical scale and then comes in the ninth place, one, Qassi by name. The supreme charge of the Kaba fell into the hands of Qassi (d. 480 A.D.).