Musnad Ahmad 25:1169

'Affan narrated to us, Abu 'Awanah narrated to us, Simak bin Harb narrated to us, from Sa'id bin Jubayr, from 'Abdullah bin 'Abbas, who said: The Messenger of Allah (ﷺ) said to Ma'iz bin Malik: "Is it true what has reached me about you, that you had intercourse with the slave girl of the tribe of so-and-so?" He said: So he testified four testimonies. He said: Then he stoned him.