Prohibition of Looking into Someone’s House
Shaykh-ul-Islaam Ibn Taymiyah (may Allaah have mercy upon him) said:
“Just as lowering the gaze includes not looking at the ‘awrahs of other people and other haraam things, it also includes refraining from looking into people’s houses. A man’s house conceals his body just as his garments conceal him. Allaah has mentioned lowering the gaze and guarding one’s private parts after the verse about asking for permission to enter, because the house covers a person just as the clothes on his body do.”
[Majmoo’ al-Fataawa,15/379]