Ask for permission before entering someone else’s home or space as an act of politeness and respect towards them .

This hadith highlights the importance of asking permission before entering someone’s home. It was narrated by Sahl bin Sa'd As-Saidi that a man looked through a hole in the door of the Prophet, who had with him a kind of comb with which he was scratching his head. When the Messenger of Allah saw him he said that if he had known that he was watching him, he would have stabbed him in the eye with this comb. This rule of asking permission has been ordained so that one may not look unlawfully into people's houses and respect their privacy. This hadith teaches us to be respectful and courteous when we enter other people’s homes and not take our right to privacy for granted. We should always remember to ask for permission before entering someone else’s home or space as it is an act of politeness and respect towards them.