Sahih al-Bukhari, Volume 7, Book 62, Hadith 168 (USC-MSA) ⓘ
Narrated `Abdullah: The Prophet 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."
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 " .
also referenced under: Book 67, Hadith 174 (In-Book) & Hadith 5241 (DarusSalam)