Sunan Abi Dawud 4470
سنن أبي داود#4470SahihAbu 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
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Zubair Ali ZaiSahih Muslim (1703)
In-book reference: 40:120