Narrated Abu Hurairah: The Prophet ﷺ said: A man should not lie with another man and a woman should not lie with another woman without covering their private parts except a child or a father. He also mentioned a third thing which I forgot.

Ibn Masud reported the Messenger of Allah ﷺ as saying “ A woman should not rub her body directly with the body of another woman so that she describes it to her husband as if he were looking at her. ”

Narrated Abu Saeed al-Khudri: The Prophet ﷺ said: A man should not look at the private parts of another man, and a woman should not look at the private parts of another woman. A man should not lie with another man without wearing lower garment under one cover; and a woman should not be lie with another woman without wearing lower garment under one cover.

Narrated Aishah, Ummul Muminin: 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.