Sahih al-Bukhari 5241
Sahih al-Bukhari · Book 67: Wedlock, Marriage (Nikaah) · A woman should not look at or touch the body of another woman to describe to her husband
Narrated `Abdullah:
حَدَّثَنَا عُمَرُ بْنُ حَفْصِ بْنِ غِيَاثٍ ، حَدَّثَنَا أَبِي ، حَدَّثَنَا الأَعْمَشُ ، قَالَ حَدَّثَنِي شَقِيقٌ ، قَالَ سَمِعْتُ عَبْدَ اللَّهِ ، قَالَ قَالَ النَّبِيُّ صلى الله عليه وسلم " لاَ تُبَاشِرِ الْمَرْأَةُ الْمَرْأَةَ فَتَنْعَتَهَا لِزَوْجِهَا كَأَنَّهُ يَنْظُرُ إِلَيْهَا " .
The Prophet (ﷺ) said, "A woman should not look at or touch another woman to describe her to her husband in such a way as if he was actually looking at her."