Prayer: Gender of the Hired Person
Practical Laws of Islam as per the teachings of Ayatullah Sistani
Ruling 1521
A man can be hired for a woman and a woman for a man. As for performing prayers aloud or in a whisper, the hired person must act according to his or her own duty.[1]
-Ayatullah Sistani, Practical Laws of Islam, Prayer (Salah)
1
Therefore, if, for example, a man has been hired to perform the qaḍāʾ ṣubḥ prayers of a deceased woman, he must recite Sūrat al-Ḥamd and the other surah aloud. See Ruling 978.