That the Messenger of Allah ﷺ said: "If one of your slave girl commits illegal sexual intercourse, then whip her three times according to the Book of Allah, and if she does it again then sell her, even if it is for a rope made of hair."
قَالَ رَسُولُ اللَّهِ ﷺ إِذَا زَنَتْ أَمَةُ أَحَدِكُمْ فَلْيَجْلِدْهَا ثَلاَثًا بِكِتَابِ اللَّهِ فَإِنْ عَادَتْ فَلْيَبِعْهَا وَلَوْ بِحَبْلٍ مِنْ شَعَرٍ قَالَ وَفِي الْبَابِ عَنْ عَلِيٍّ وَأَبِي هُرَيْرَةَ وَزَيْدِ بْنِ خَالِدٍ وَشِبْلٍ عَنْ عَبْدِ اللَّهِ بْنِ مَالِكٍ الأَوْسِيِّ