(33) باب فِي الأَمَةِ تَزْنِي وَلَمْ تُحْصَنْ
Abu Hurairah reported the Prophet (ﷺ) as saying:
When the slave-woman of any of you commits fornication, he should inflict the prescribed punishment on her, but not hurl reproaches at her. This is to be done up to three times. If she a fourth time, he should flog her, and sell her even if only for a rope of hair.
Reference: Sunan Abi Dawud 4470
In-book reference: Book 40, Hadith 120
English translation: Book 39, Hadith 4455