Sayyiduna Anas bin Malik (may Allah be pleased with him) narrates that indeed the Messenger of Allah (peace and blessings be upon him) did not recite (in prayer) with a loud voice « بِسْمِ اللهِ الرَّحْمٰنِ الرَّحِيْمِ », nor did Sayyiduna Abu Bakr, Umar, and Uthman (may Allah be pleased with them) recite (with a loud voice).