الأوس والخزرج
He was born in Medina, and was member of the Banu Khazraj tribe. He was gifted Sirin as a concubine. After Muhammad's death, Hassan was supposed to have traveled east as far as China, preaching for Islam along with Sa`d ibn Abi Waqqas, Thabit ibn Qays, and Uwais al-Qarni.