Muwatta Imam Malik Book of Divorce, Hadith 10

Yahya related to me from Malik that he had heard that a man came to Abdullah ibn Umar, and said, "Abu Abd ar-Rahman! I placed the command of my wife in her hand, and she divorced herself, what do you think?" Abdullah ibn Umar said, "I think that it is as she said." The man said, "Don't do it, Abu Abd ar-Rahman!" Ibn Umar said, "You did it, it has nothing to do with me."

حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، أَنَّهُ بَلَغَهُ أَنَّ رَجُلاً، جَاءَ إِلَى عَبْدِ اللَّهِ بْنِ عُمَرَ فَقَالَ يَا أَبَا عَبْدِ الرَّحْمَنِ إِنِّي جَعَلْتُ أَمْرَ امْرَأَتِي فِي يَدِهَا فَطَلَّقَتْ نَفْسَهَا فَمَاذَا تَرَى فَقَالَ عَبْدُ اللَّهِ بْنُ عُمَرَ أُرَاهُ كَمَا قَالَتْ . فَقَالَ الرَّجُلُ لاَ تَفْعَلْ يَا أَبَا عَبْدِ الرَّحْمَنِ . فَقَالَ ابْنُ عُمَرَ أَنَا أَفْعَلُ أَنْتَ فَعَلْتَهُ .