Hazrat Sahl bin Sa’d narrates that a person peeped into the chamber of the Holy Prophet (peace and blessings be upon him) through a hole, at a time when the Prophet (peace and blessings be upon him) had a comb with which he was scratching his head. The Prophet (peace and blessings be upon him) said: If I had known that you were looking, I would have struck your eye with this comb. This is because permission is sought only due to the eye.