Abu Bakr ibn Abi Shaybah narrated to us, Zayd ibn al-Hubab narrated to us, from al-Dahhak ibn 'Uthman, who said: Zayd ibn Aslam informed me, from 'Abd al-Rahman ibn Abi Sa'id al-Khudri, from his father, that the Messenger of Allah (peace be upon him) said: "A man should not look at the 'awrah of another man, and a woman should not look at the 'awrah of another woman, and a man should not lie under a single garment with another man, and a woman should not lie under a single garment with another woman."