حَدَّثَنَا هَنَّادٌ، حَدَّثَنَا أَبُو مُعَاوِيَةَ، عَنِ الأَعْمَشِ، عَنْ شَقِيقِ بْنِ سَلَمَةَ، عَنْ عَبْدِ اللَّهِ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ لاَ تُبَاشِرُ الْمَرْأَةُ الْمَرْأَةَ حَتَّى تَصِفَهَا لِزَوْجِهَا كَأَنَّمَا يَنْظُرُ إِلَيْهَا ‏"‏ ‏.‏ قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ ‏.‏
Translation
Narrated 'Abdur-Rahman bin Abi Sa'eed [Al-Khudri]from his father who said

"The Messenger of Allah (ﷺ) said: 'A man is not to look at the 'Awrah of a man, and a woman is not to look at the 'Awrah of a woman. A man is not to be alone with a man under one garment, and a woman is not to be alone with a woman under one garment.'"