For instance, Abu al-Faraj wrote in his Al-Aghani v.

For instance, Abu al-Faraj wrote in his Al-Aghani v.8, p.307: "When Abdullah Ibn Al-Hasan was still young, he visited Umar Ibn Abdul Aziz who sat him in an honorable place, paid much attention to him and fulfilled his wishes. Ibn Abdul Aziz then pinched the…