It is narrated from Hazrat Anas (may Allah be pleased with him) that once the Prophet (peace and blessings be upon him) was sitting in his house when a man came and began to look inside through a hole. The Prophet (peace and blessings be upon him) took the comb he was holding in his hand and moved towards him, so the man began to withdraw. It seemed as if the Prophet (peace and blessings be upon him) would strike him with that comb.