521 — Al-Firyābī informed us, saying: Muhammad ibn Abī Bakr al-Muqaddamī narrated to us, saying: Abd al-Rahmān ibn Mahdī narrated to us, from Umar ibn Dharr, who said: I heard Umar ibn Abd al-Azīz say, “Had Allah willed not to be disobeyed, He would not have created Iblīs. He has explained this in a verse from the Book of Allah Most High; whoever understood it understood it, and whoever remained ignorant of it remained so: ‘You cannot tempt anyone away from Him except one who is destined to burn in Hell’ [al-Sāffāt: 163].”