Sahih Muslim Book 4, Hadith Number 754.

Chapter : He who hears the Adhin should respond like it, invoke blessings upon the Apostle (may peace be upon him)and then beg for him the Wasila.

Abu Huraira reported: The Messenger of Allah (may peace be upon him) said: When the Mu’adhdhin calls to prayer, Satan runs back vehemently.