520 — Al-Firyābī also informed us, saying: Abū Bakr ibn Abī Shayba narrated to us, saying: Abd Allāh ibn Idrīs narrated to us, from Umar ibn Dharr, who said: Umar ibn Abd al-Azīz said, “Had Allah Most High willed not to be disobeyed, He would not have created Iblīs, who is the source of sin