Musnad Ahmad 26:426

Yahya ibn Adam narrated to us, Sufyan narrated to us, from Husayn, from Kathir ibn Mudrik, from Abd al-Rahman ibn Yazid, from Abdullah, that he recited the Talbiyah on the night of Jam' (Muzdalifah). Then he said: "Here is where I saw the one upon whom Surah al-Baqarah was revealed reciting the Talbiyah."