Al-A'mash said: I heard al-Hajjaj delivering a sermon on the pulpit, saying: Arrange the Qur'an as Jibril (peace be upon him) arranged it: the surah in which the cow is mentioned, the surah in which al-Nisa' (the women) is mentioned, the surah in which the family of Imran is mentioned. Then I met Ibrahim (may Allah have mercy on him) and told him this, and he reviled him, then said: Abd al-Rahman bin Yazid informed me that he was with Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) at Jamrat al-Aqabah. When he reached it, he stood in the middle of the valley and, facing it, threw seven small pebbles, saying the takbir with each pebble. I said: But people throw at it from above. He said: By the One besides whom there is no god, this is the standing place of the one upon whom Surah al-Baqarah was revealed.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 9547