Aya number 28 of surat An-Noor
بِسْمِ اللَّهِ الرَّحْمَٰنِ الرَّحِيمِ
فَإِنْ لَمْ تَجِدُوا فِيهَا أَحَدًا فَلَا تَدْخُلُوهَا حَتَّىٰ يُؤْذَنَ لَكُمْ وَإِنْ قِيلَ لَكُمُ ارْجِعُوا فَارْجِعُوا هُوَ أَزْكَىٰ لَكُمْ وَاللَّهُ بِمَا تَعْمَلُونَ عَلِيمٌ [٢٨]
Translation: English - Sahih International
And if you do not find anyone therein, do not enter them until permission has been given you. And if it is said to you, "Go back," then go back; it is purer for you. And Allah is Knowing of what you do.
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