Mukhtasar Muslim

It is narrated from Sayyiduna Abu Mahdhurah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings of Allah be upon him) taught him the Adhan in this way: Allahu Akbar, Allahu Akbar. (In the other narrations, Allahu Akbar is said four times.) Ashhadu an la ilaha illallah, Ashhadu an la ilaha illallah. Ashhadu anna Muhammadur Rasulullah, Ashhadu anna Muhammadur Rasulullah. Then he should repeat: Ashhadu an la ilaha illallah, Ashhadu an la ilaha illallah. Ashhadu anna Muhammadur Rasulullah, Ashhadu anna Muhammadur Rasulullah. Hayya ‘ala-s-Salah, twice. Hayya ‘ala-l-Falah, twice. Ishaq states that after this, he should say: Allahu Akbar, Allahu Akbar. La ilaha illallah.