Musannaf Ibn Abi Shaybah 31644 — 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 were saying the takbir in loud voices. The Prophet (peace and blessings be upon him) said: 'Be gentle with yourselves. You are not calling upon one who is deaf or absent; rather, you are calling upon One who is All-Hearing and Near, and that Being is with you.'"