Sahih Muslim
The Book of Divorce (Kitab Al-Talaq)
Book Number: 009 / Hadith Number: 3558
Ibn 'Umar (Allah be pleased with them) said that Allah's Messenger (may peace be upon him) effected separation between the two members of Banu al-'Ajlan, and said: Allah knows that one of you is a liar. Is there one to repent among you?