رِيَاضُ الصَّالِحِينَ
Riyad as-Salihin 1698
The Book of the Prohibited actions
Undesirability of Quarrelling or Raising voices in the Mosque
وَعَنْ بُرَيْدَةَ رَضِيَ اللَّه عَنْهُ أَنَّ رَجُلاً نَشَدَ فِي الْمَسْجِدِ فَقَالَ: مَنْ دَعَا إِلَى الْجَمَلِ الأَحْمَرِ، فَقَالَ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ : لاَ وَجَدْتَ، إِنَّمَا بُنِيَتِ الْمَسَاجِدُ لم بنيت له ((رَوَاهُ مُسْلِم)).
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].
Riyad as-Salihin, 1698