It is narrated from Sayyiduna Jabir bin Abdullah (may Allah be pleased with them both) that the Noble Prophet (peace and blessings be upon him and his family) said: A man should not touch his body with another man in a single garment.
Hadith Referenceالفتح الربانی / مسائل الحدود / 6672
Hadith Gradingمحدثین:صحیح
Hadith Takhrij«صحيح لغيره۔ أخرجه الحاكم: 4/287، والطبراني في ’’الاوسط‘‘: 5214، (انظر مسند أحمد ترقيم الرسالة: 14836 ترقیم بيت الأفكار الدولية: 14897»
Brief Explanation
Benefits: … It is prohibited for a woman to lie naked with another woman, or a man with another man, under a single blanket or cloth, because this leads to lack of modesty, indecency, and the emergence of impure thoughts. In some cases, there is even the danger that this may lead to the commission of a major forbidden act.