893 - Abdullah ibn Ahmad informed us, saying: My father narrated to me, saying: Mu'adh narrated to us, saying: Al-Aghdaf 'Amr ibn al-Walid narrated to us, saying: I said to Mu'adh ibn Mansur: Who told you that Ubayy ibn Ka'b turned Ibn Mas'ud away from his discourse regarding the Decree (al-Qadar)? He said: So he replied: A man whom I do not know narrated it to me. He said: I then said: But I know who he is. He said: So he asked: Who is he? I replied: Satan.