The World Federation One Stop Fiqh

Ruling 1375

If the eldest son wishes to perform the qaḍāʾ prayers of his mother, he must act according to his own duty with regard to reciting Sūrat al-Ḥamd and the other surah aloud or in a whisper. Therefore, he must perform his mother’s qaḍāʾ ṣubḥ, maghrib, and ʿishāʾ prayers aloud.