Musannaf Ibn Abi Shayba 19:713

Abu Bakr narrated to us, he said: Sufyan ibn ‘Uyaynah narrated to us, from al-Zuhri, from ‘Ubayd Allah ibn ‘Abd Allah, from Abu Hurayrah, Zayd ibn Khalid, and Shibl, that they said: We were with the Prophet, may Allah bless him and grant him peace, when a man stood up and said: "I adjure you by Allah, will you not judge between us by the Book of Allah?" His opponent, who was more knowledgeable than him, said: "Judge between us by the Book of Allah, and permit me to speak." He (the Prophet) said: "Speak." He said: "My son was a hired servant for this man, and he committed adultery with his wife. I ransomed him (my son) from him with one hundred sheep and a servant. Then I asked some men of knowledge, and they informed me that my son must receive one hundred lashes and be banished for a year, and that this man’s wife must be stoned." The Prophet, may Allah bless him and grant him peace, said: "By the One in whose hand is my soul, I will surely judge between you by the Book of Allah. The one hundred sheep and the servant are to be returned to you, and your son shall receive one hundred lashes and be banished for a year. And go, O Unays, to this man’s wife; if she confesses, then stone her."