Sayyidina Abu Sa’eed (RA) reported that Allah’s Messenger (SAW) said, “Let no man look at the satr of another man and no woman at the satr of another woman. And, let no man lie down with another man covered with the same blanket and let no woman lie down with anothr woman covered with the same blanket.”
[Ahmed 11601, Muslim 338, Ibn e Majah 661]