Abu Huraira reported Allah's Messenger (ﷺ) saying like this.
Sahih Muslim Book 5, Hadith 99
← Previous Hadith 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.

Sahih Muslim Book 5, Hadith 98 Next Hadith → Who had called out for the red camel? Upon this the Messenger of Allah (ﷺ) said: May it not be restored to you! The mosques are built for what they are meant.

Sahih Muslim Book 5, Hadith 100