While we were at Jam, I heard the one upon whom Surat al-Baqarah was revealed saying at this very place, "Labbayk Allahumma labbayk."
أخبرنا هناد بن السري في حديثه عن أبي الأحوص عن حصين عن كثير وهو ابن مدرك عن عبد الرحمن بن يزيد قال
ونحن بجمع سمعت الذي أنزلت عليه سورة البقرة يقول في هذا المكان لبيك اللهم لبيك
Muslim narrated it in the Book of Hajj, chapter on the recommendation of the pilgrim continuing the talbiyah until he begins throwing the pebbles at Jamrat al-Aqabah, hadith no. 1283, from the hadith of Abu Ahwas through this route, and it is in Sunan al-Kubra, hadith no. 4053. Aqabah, on the day.