Ayesha reported,

I imitated a man in the presence of the Prophet ﷺ, and he said, "It would not please me to imitate someone, even if I were given such and such in return."I then said, "Messenger of Allah, Safiyyah is a woman..." and I gestured with my hand as if to indicate that she was short.He said, "You have spoken a word that, if it were mixed with the water of the sea, would taint it."

Azami 13359

Sahih

عن عائشة قالت

حكيت للنبي ﷺ رجلا، فقال: مايسرني أني حكيت رجلا، وأن لي كذا وكذا قال: فقلت: يا رسول الله، إن صفية امرأة- وقال بيده، كأنه يعني قصيرة فقال: لقد مزجت بكلمة لو مزج بها ماء البحر مزجت.

الأعظمي 13359صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Tafsir of the great Quran
Chapter
Tafsir of Surah Hujurat
Section
His saying, "O you who believe, avoid much suspicion, for indeed some suspicion is sin. And do not spy or backbite one another. Would one of you like to eat the flesh of his dead brother? You would detest it. And fear Allah, indeed"
Numbering
Jami al-Kamil 13359 (2nd edition)