(13) باب فِي أَمْرُكِ بِيَدِكِ
Qatadah reported on the authority of Al Hasan the uttering of the words "Your matter is in your hand" amounts to three pronouncements of divorce.
Reference: Sunan Abi Dawud 2205
In-book reference: Book 13, Hadith 31
English translation: Book 12, Hadith 2199