A mukhannath (eunuch) used to enter upon the wives of Prophet ﷺ. They (the people) counted him among those who were free of physical needs. One day the Prophet ﷺ entered upon us when he was with one of his wives, and was describing the qualities of a woman, saying: When she comes forward, she comes forward with four (folds in her stomach), and when she goes backward, she goes backward with eight (folds in her stomach). The Prophet ﷺ said: Do I not see that this (man) knows what here lies. Then they (the wives) observed veil from him.  

كَانَ يَدْخُلُ عَلَى أَزْوَاجِ النَّبِيِّ ﷺ مُخَنَّثٌ فَكَانُوا يَعُدُّونَهُ مِنْ غَيْرِ أُولِي الإِرْبَةِ فَدَخَلَ عَلَيْنَا النَّبِيُّ ﷺ يَوْمًا وَهُوَ عِنْدَ بَعْضِ نِسَائِهِ وَهُوَ يَنْعَتُ امْرَأَةً فَقَالَ إِنَّهَا إِذَا أَقْبَلَتْ أَقْبَلَتْ بِأَرْبَعٍ وَإِذَا أَدْبَرَتْ أَدْبَرَتْ بِثَمَانٍ فَقَالَ النَّبِيُّ ﷺ أَلاَ أَرَى هَذَا يَعْلَمُ مَا هَا هُنَا لاَ يَدْخُلَنَّ عَلَيْكُنَّ هَذَا فَحَجَبُوهُ  

The tradition mentioned above has also been transmitted by 'Aishah through a different chain of narrators to the same effect.  

عَنْ عَائِشَةَ بِمَعْنَاهُ  

He (the Prophet) exiled him and he lived in a desert (outside Medina). He would come every Friday asking for food.  

عَنْ عَائِشَةَ بِهَذَا الْحَدِيثِ زَادَ وَأَخْرَجَهُ فَكَانَ بِالْبَيْدَاءِ يَدْخُلُ كُلَّ جُمُعَةٍ يَسْتَطْعِمُ  

He was told: Messenger of Allah, in that case he will of starvation. So he allowed him to visit (the cit) twice a week so that he might ask for food and go back.  

عَنِ الأَوْزَاعِيِّ فِي هَذِهِ الْقِصَّةِ فَقِيلَ يَا رَسُولَ اللَّهِ إِنَّهُ إِذًا يَمُوتُ مِنَ الْجُوعِ فَأَذِنَ لَهُ أَنْ يَدْخُلَ فِي كُلِّ جُمُعَةٍ مَرَّتَيْنِ فَيَسْأَلَ ثُمَّ يَرْجِعَ