Musannaf Ibn Abi Shayba 19:707

Abu Bakr narrated to us, he said: Yazid ibn Harun narrated to us, he said: Dawud informed us, from Sa'id ibn al-Musayyib, from Umar, he said: The Messenger of Allah (may Allah bless him and grant him peace) stoned, and Abu Bakr stoned, and I stoned.