Sahih Muslim 568
Sahih Muslim · Book 5: The Book of Mosques and Places of Prayer · 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
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.