Sahih Bukhari

Narrated Abu Raja:The freed slave of Abu Qilaba, who was with Abu Qilaba in Sham: `Umar bin `Abdul `Aziz consulted the people saying, ""What do you think of Qasama."" They said, ""'It is a right (judgment) which Allah's Apostle and the Caliphs before you acted on."" Abu Qilaba was behind `Umar's bed. 'Anbasa bin Sa`id said, But what about the narration concerning the people of `Uraina?"" Abu Qilaba said, ""Anas bin Malik narrated it to me,"" and then narrated the whole story