Advice to ‘Umar ibn ‘Abdul-‘Aziz from Al-Hasan al-Basri
When ‘Umar ibn ‘Abdul-‘Aziz became Caliph, he wrote to Al-Hasan al-Basri to give him an advice him and to write him the description of a just Imam, and Al-Hasan wrote him:
“Know, Commander of the Believers….