Musannaf Ibn Abi Shaybah 8690 — Raising the voice in supplication

Sayyiduna Abu Musa (may Allah be pleased with him) said: We were with the Prophet (peace and blessings be upon him) on a journey, and the people began saying the takbir in loud voices. He (peace and blessings be upon him) said to them: "O people, be gentle with yourselves. You are not calling upon one who is deaf or far away; rather, you are calling upon One who is All-Hearing and Near, and He is with you."