Arabic Text
حَدَّثَنَا أَبُو الطَّاهِرِ، أَحْمَدُ بْنُ عَمْرٍو حَدَّثَنَا ابْنُ وَهْبٍ، عَنْ حَيْوَةَ، عَنْ مُحَمَّدِ بْنِ عَبْدِ الرَّحْمَنِ، عَنْ أَبِي عَبْدِ اللَّهِ، مَوْلَى شَدَّادِ بْنِ الْهَادِ أَنَّهُ سَمِعَ أَبَا هُرَيْرَةَ، يَقُولُ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " مَنْ سَمِعَ رَجُلاً يَنْشُدُ ضَالَّةً فِي الْمَسْجِدِ فَلْيَقُلْ لاَ رَدَّهَا اللَّهُ عَلَيْكَ فَإِنَّ الْمَسَاجِدَ لَمْ تُبْنَ لِهَذَا " .
English Translation
Abu Huraira reported: The Messenger of Allah (ﷺ) said: If anyone hears a man crying out in the mosque about something he has lost, he should say: May Allah not restore it to you, for the mosques were not built for this.
This hadith is from Sahih Muslim, one of the most rigorously authenticated collections in Islamic scholarship. No editorial opinion is added.