This noble Hadīth indicates that during the prayers with inaudible recitation such as Zhuhr and ‘Asr, one should recite Sūrat al-Fātihah with another Sūrah in the first two Rak‘āhs, and recite Sūrat al-Fātihah only in the last two Rak‘āhs exactly as done in the audible prayers. There is no harm if one raises his voice a little for the purpose of teaching others.