Sahih Muslim Book 4, Hadith Number 1186.

Chapter : It is forbidden to cry out for finding out the lost thing in the mosque.

Abu Huraira reported: I offered with the Apostle of Allah (may peace be upon him) the noon prayer and the Messenger of Allah (may peace be upon him) gave salutation after two rak’ahs. A person from Bani Sulaim stood up, and the rest of the Hadith was narrated as mentioned above.