Is the takbir of entering prayer valid if said silently without any sound that the man himself hears?

Question:
May Allah reward you, Honorable Shaykh. This questioner says: The prayer is established, then the imam says the takbir of entering prayer, and the people say it after him, but we do not hear any sound from some of them when they say the takbir, which is the essence of the takbir of entering prayer. The question is: Is the takbir of entering prayer valid if said silently without any sound that the man himself hears? It is necessary to teach this.

Answer:
One must utter the takbir so that a person hears himself. The imam says it aloud so that the ma'mum (one praying behind the imam) hear it and follow him. As for the ma'mum and the one praying alone, he raises his voice to the extent that he hears himself. If he does not hear himself, the takbir is not valid. Yes.