Mukhtasar Bukhari (Abridged) 376 — What to say after hearing adhan

`Sayyiduna Amir Muawiyah (may Allah be pleased with him)` responded to the adhan up to "Ashhadu anna Muhammadan Rasulullah" just as the adhan is said, and when (the muezzin said) "Hayya 'ala-s-Salah," he said "La hawla wa la quwwata illa billah," and said that I heard the Noble Prophet (peace and blessings of Allah be upon him) saying it in this manner.