فَإِن لَّمْ تَجِدُواْ فِيهَآ أَحَدًا فَلَا تَدْخُلُوهَا حَتَّىٰ يُؤْذَنَ لَكُمْۖ وَإِن قِيلَ لَكُمُ ٱرْجِعُواْ فَٱرْجِعُواْۖ هُوَ أَزْكَىٰ لَكُمْۚ وَٱللَّهُ بِمَا تَعْمَلُونَ عَلِيمٌ ٢٨
And if ye find no-one therein, still enter not until permission hath been given. And if it be said unto you: Go away again, then go away, for it is purer for you. Allah knoweth what ye do.