They (the Companions) accompanied the Prophet (ﷺ) while they were climbing the turning of a hill. A man uttered loudly: "There is no god but Allah, and Allah is most great" when he ascended the hill. The Prophet of Allah (ﷺ) said: You are not supplicating one who is deaf or absent. He then said: 'Abd Allah b. Qais. The narrator then transmitted the tradition to the same effect.
Sunan Abi Dawud Book 8, Hadith 112
← Previous Hadith Once we accompanied the Messenger of Allah (ﷺ) on a journey. When we reached near Medina, the people began to say aloud: "Allah is most great," and they raised their voice.

The Messenger of Allah (ﷺ) said: O people, you are not supplicating one who is deaf and absent, but you are supplicating One Who is nearer to you than the neck of your riding beast.

The Messenger of Allah (ﷺ) then said: AbuMusa, should I not point out to you one of the treasures of Paradise?

I asked: What is that?

He replied: "There is no might and there is no power except in Allah"

Sunan Abi Dawud Book 8, Hadith 111 Next Hadith → Be lenient to yourselves, O people.

Sunan Abi Dawud Book 8, Hadith 113