Hadith 8:2431
Abu Bakr narrated to us, he said: Waki’ narrated to us, from Sufyan, from Ibn Khuthaym, from Mujahid, who said: I saw him performing ramal (brisk walking) on the Day of Sacrifice.
حدثنا أبو بكر قال حدثنا وكيع عن سفيان عن بن خثيم عن مجاهد قال رأيته يرمل يوم النحر