Musannaf Ibn Abi Shayba 2:239

Abu Bakr narrated to us, he said: Isma'il bin 'Ulayyah and Yazid bin Harun narrated to us, from Hisham al-Dastawa'i, from Yahya bin Abi Kathir, from Muhammad bin Ibrahim, from 'Isa bin Talhah, he said: We entered upon Mu'awiyah, and the mu'adhdhin came and said: "Allah is the Greatest, Allah is the Greatest." Mu'awiyah said the same as that. Then he said: "Thus I heard your Prophet say."