Prayer: The Order of Performing Qadaʾ for Non-Daily Prayers
Practical Laws of Islam as per the teachings of Ayatullah Sistani
Ruling 1361
If a person wants to make up prayers that are not the daily prayers – such as ṣalāt al‑āyāt – or if, for example, he wants to make up one daily prayer and some other prayers, it is not necessary for him to perform them in the order they became qaḍāʾ.