Sunan Abi Dawud 4113
Narrated 'Amr b. Suh'aib:
On his father's authority, said that his grandfather reported the Prophet (ﷺ) said: When one of you marries his male-slave to his slave-woman, he should not look at her private parts.
حَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ الْمَيْمُونِ، حَدَّثَنَا الْوَلِيدُ، عَنِ الأَوْزَاعِيِّ، عَنْ عَمْرِو بْنِ شُعَيْبٍ، عَنْ أَبِيهِ، عَنْ جَدِّهِ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ ‏
"‏ إِذَا زَوَّجَ أَحَدُكُمْ عَبْدَهُ أَمَتَهُ فَلاَ يَنْظُرْ إِلَى عَوْرَتِهَا ‏"‏ ‏.‏