مُسْنَدُ أَحْمَدَ
Musnad Ahmad 4123
Musnad of Abdullah bin Mas'ood
It was narrated from "Abdur-Rahman bin Yazeed that He did Hajj with 'Abdullah (رضي الله عنه). He stoned the Jamarah with seven pebbles. He put the House (the Kabah) on his left and Mina on his right, and he said: This is the place where the one to whom Sooratal-Baqarah was revealed stood.
Musnad Ahmad 4150Its isnad is saheeh according to the conditions of al-Bukhar