Musannaf Ibn Abi Shayba 2:161

Ibn ‘Ulayyah narrated to us, from Abu Harun al-Ghanawi, who said: Abu ‘Uthman narrated to us, who said: Salman said: There is no man in a land who gives the adhan and the iqamah, except that there prays behind him of the creation of Allah that which its two ends cannot be seen.