Hadith 1803
Sayyiduna Anas (may Allah be pleased with him) narrates that the Prophet (peace and blessings be upon him), Sayyiduna Abu Bakr (may Allah be pleased with him), and Sayyiduna Umar (may Allah be pleased with him) did not recite «بسم اللہ الرحمن الرحیم» aloud. These noble ones used to recite «الحمدلله رب العالمین» aloud.