Sahih Bukhari

Narrated Abu Musa Al-Ash`ari:When Allah's Messenger (ﷺ) fought the battle of Khaibar, or when Allah's Messenger (ﷺ) went towards it, (whenever) the people, (passed over a high place overlooking a valley, they raised their voices saying, ""Allahu-Akbar! Allahu-Akbar! None has the right to be worshipped except Allah."" On that Allah's Apostle said (to them), ""Lower your voices, for you are not calling a deaf or an absent one, but you are calling a Hearer Who is near and is with you."" I was behind the riding animal of Allah's Messenger (ﷺ) and he heard me saying. ""There Is neither might, nor power but with Allah,"" On that he said to me, ""O `Abdullah bin Qais!"" I said, ""Labbaik. O Allah's Messenger (ﷺ)!"" He said, ""Shall I tell you a sentence which is one of the treasures of Paradise"" I said, ""Yes, O Allah's Messenger (ﷺ)! Let my father and mother be sacrificed for your sake."" He said, ""It is: There is neither might nor power but with Allah