Sahih Bukhari Volume 009, Book 091, Hadith Number 365.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 91. Accepting Information given by a Truthful Person
Narrated By Abu Huraira : While we were with Allah's Apostle a bedouin got up and said, "O Allah's Apostle! Settle my case according to Allah's Book (Laws)." Then his opponent got up and said, "O Allah's Apostle! He has said the truth! Settle his case according to Allah's Book (Laws.) and allow me to speak," He said, "My son was a laborer for this man and he committed illegal sexual intercourse with his wife. The people told me that my son should be stoned to death but I ransomed him with one-hundred sheep and a slave girl. Then I asked the religious learned people and they told me that his wife should be stoned to death and my son should receive one-hundred lashes and be sentenced to one year of exile.' The Prophet said, "By Him in Whose Hands my life is, I will judge between you according to Allah's Book (Laws): As for the slave girl and the sheep, they are to be returned; and as for your son, he shall receive one-hundred lashes and will be exiled for one year. You, O Unais!" addressing a man from Bani Aslam, "Go tomorrow morning to the wife of this (man) and if she confesses, then stone her to death." The next morning Unais went to the wife and she confessed, and he stoned her to death.