Maliks Muwatta Book 29, Hadith Number 12.
Section : Circumstances in Which only One Pronouncement of Divorce Permitted in Giving Wives Right of Divorce.
Yahya related to me from Malik from Said ibn Sulayman ibn Zayd ibn Thabit that Kharija ibn Zayd ibn Thabit told him that he was sitting with Zayd ibn Thabit when Muhammad ibn Abi Atiq came to him with his eyes brimming with tears. Zayd asked him what the matter was. He said, “I gave my wife command of herself, and she separated from me.” Zayd said to him, “What made you do that?” He said, “The Decree.” Zayd said, “Return to her if you wish for it is only one pronouncement, and you have access to her.”