There was an effeminate man who used to come in upon the wives of the Prophet ﷺ, and they did not consider him among those men who possess sexual desire. One day the Prophet ﷺ came in while this man was with one of his wives, describing a woman. He said, "When she comes forward, she has four folds in her belly, and when she turns away, those folds appear as eight."The Prophet ﷺ said, "I see that this man knows about such matters. He must not enter upon you anymore."So they kept him in seclusion from her.
حدثنا عبد الرزاق حدثنا معمر عن الزهري عن عروة بن الزبير
كان رجل يدخل على أزواج النبي ﷺ مخنث وكانوا يعدونه من غير أولي الإربة فدخل النبي ﷺ يوما وهو عند بعض نسائه وهو ينعت امرأة فقال إنها إذا أقبلت أقبلت بأربع وإذا أدبرت أدبرت بثمان فقال النبي ﷺ لا أرى هذا يعلم ما ها هنا لا يدخل عليكن هذا فحجبوه