عن أبي هريرة رضي الله عنه أنه سمع رسول الله صلى الله عليه وسلم يقول‏:‏ ‏"‏من سمع رجلا ينشد ضالة في المسجد فليقل‏:‏ لا ردها الله عليك، فإن المساجد لم تبنَ لهذا‏"‏ ‏(‏‏(‏رواه مسلم‏)‏‏)‏‏.‏

Buraidah (May Allah be pleased with him) said

A man announced (the loss of his camel) in the mosque, uttering these words: "Has any one seen my 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 to be (i.e., prayer, remembrance of Allah, acquiring knowledge, etc.)."[Muslim].