Sayyiduna Sahl bin Sa’d (may Allah be pleased with him) said: When the Messenger of Allah (peace and blessings be upon him) was combing his hair with an iron comb in the room, a companion began to peep inside. The Messenger of Allah (peace and blessings be upon him) said:“If I had known that you were peeping, I would have stood up and poked this comb into your eye. Permission to enter has been enjoined only because of the gaze.”