Musannaf Ibn Abi Shaybah 2259 — Those who said in their adhan: Come

Muslim bin Abi Maryam said: Ali bin Husayn used to give the adhan, and when he reached 'Hayya 'ala al-falah' (Come to success), he would say 'Hayya 'ala khayr al-'amal' (Come to the best of deeds), and he would say: This was the first adhan.