﴿ فَإِن لَّمْ تَجِدُوا۟ فِيهَآ أَحَدًۭا فَلَا تَدْخُلُوهَا حَتَّىٰ يُؤْذَنَ لَكُمْ ۖ وَإِن قِيلَ لَكُمُ ٱرْجِعُوا۟ فَٱرْجِعُوا۟ ۖ هُوَ أَزْكَىٰ لَكُمْ ۚ وَٱللَّهُ بِمَا تَعْمَلُونَ عَلِيمٌۭ ﴾

“Hence, [even] if you find no one within [the house], do not enter it until you are given leave; and if you are told, “Turn back,” then turn back. This will be most conducive to your purity; and God has full knowledge of all that you do.”

(And if ye find no one therein) in the houses to give you permission to enter, (still enter not until permission hath been given) to enter. (And if it be said unto you: Go away again) and if you are told not to enter, (then go away) and remain not standing at the door of people's houses, (for it is purer for you) for it is better for you than to remain standing at the doors of people's houses. (Allah knoweth what ye do) of asking permission and other things.