It is narrated from Hazrat Abu Rafi' (may Allah be pleased with him) that when the Prophet (peace and blessings be upon him) heard the voice of the muezzin, he would repeat the same phrases that he was saying, but when he reached «حي على الصلوة» and «حي على الفلاح», the Prophet (peace and blessings be upon him) would say «لا حول ولا قوة الا بالله».