The World Federation One Stop Fiqh

Ruling 938

One must say takbīr, Sūrat al-Ḥamd, the other surah, dhikr, and duʿāʾs in a manner that he at least hears his own voice. If he cannot hear it on account of being hard of hearing or deaf or there being too much noise, he must say them in a manner that he would have been able to hear them were there no impediment.