The Messenger of Allah ﷺ himself taught me the call to prayer. He said, "Say, Allah is the Greatest, Allah is the Greatest, Allah is the Greatest, Allah is the Greatest. I bear witness that there is no god but Allah, I bear witness that there is no god but Allah. I bear witness that Muhammad is the Messenger of Allah, I bear witness that Muhammad is the Messenger of Allah," each phrase twice.Then he said, "Then return and raise your voice, I bear witness that there is no god but Allah, I bear witness that there is no god but Allah. I bear witness that Muhammad is the Messenger of Allah, I bear witness that Muhammad is the Messenger of Allah. Come to prayer, come to prayer. Come to success, come to success. Allah is the Greatest, Allah is the Greatest. There is no god but Allah."
حدثنا محمد بن بشار حدثنا أبو عاصم حدثنا ابن جريج أخبرني ابن عبد الملك بن أبي محذورة يعني عبد العزيز عن ابن محيريز
ألقى علي رسول الله ﷺ التأذين هو بنفسه فقال قل الله أكبر الله أكبر الله أكبر الله أكبر أشهد أن لا إله إلا الله أشهد أن لا إله إلا الله أشهد أن محمدا رسول الله أشهد أن محمدا رسول الله مرتين مرتين قال ثم ارجع فمد من صوتك أشهد أن لا إله إلا الله أشهد أن لا إله إلا الله أشهد أن محمدا رسول الله أشهد أن محمدا رسول الله حي على الصلاة حي على الصلاة حي على الفلاح حي على الفلاح الله أكبر الله أكبر لا إله إلا الله
[Sahih] Reported by Nasai, "The Book of Adhan, Chapter on How the Adhan Is Called," no. 633, from the hadith of Ibn Jurayj through this route, and Ibn Majah, no. 708, from Muhammad bin Bashshar and others. The preceding hadith serves as a corroborating witness for it.