Musannaf Ibn Abi Shaybah 30698 — The one guilty of zina: how many

Sayyiduna Ibn Abbas (may Allah be pleased with them both) said that Sayyiduna Umar (may Allah be pleased with him) said: Stoning is one of the prescribed punishments of Allah, so let none of you be deceived about it. The sign of this is that the Messenger of Allah (peace and blessings be upon him) carried out stoning, Sayyiduna Abu Bakr (may Allah be pleased with him) carried out stoning, and I too have carried out stoning.