Reference: Siyar A’laam an-Nubalaa – Volume 1, Page 443
‘Abdullaah ibn ‘Amr narrated that the Messenger of Allaah (sal-Allaahu ‘alayhi wa sallam) said:
«Take the Qur.aan from four; from: [‘Abdullaah] ibn Mas’ood, and Ubayy [ibn Ka’b], and Mu’aadh ibn Jabal, and Saalim Mowlaa Abi Hudhayfah»
