The Book of Mosques and Places of Prayer
5/18. Chapter:
The prohibition of making lost property announcements in the masjid, and what should be said by one who hears a person making such an announcement
Sahih Muslim
وَحَدَّثَنِيهِ زُهَيْرُ بْنُ حَرْبٍ، حَدَّثَنَا الْمُقْرِئُ، حَدَّثَنَا حَيْوَةُ، قَالَ سَمِعْتُ أَبَا الأَسْوَدِ، يَقُولُ حَدَّثَنِي أَبُو عَبْدِ اللَّهِ، مَوْلَى شَدَّادٍ أَنَّهُ سَمِعَ أَبَا هُرَيْرَةَ، يَقُولُ سَمِعْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَقُولُ . بِمِثْلِهِ .
Abu Huraira reported Allah's Messenger (ﷺ) saying like this.
Reference : Sahih Muslim 568bIn-book reference : Book 5, Hadith 99USC-MSA web (English) reference : Book 4, Hadith 1154