Prayer: Occurrence of More Than One Phenomenon
Practical Laws of Islam as per the teachings of Ayatullah Sistani
Ruling 1471
If more than one phenomenon that makes it obligatory to perform ṣalāt al‑āyāt occurs, one must perform ṣalāt al‑āyāt for each one of them. For example, if there is a solar eclipse and an earthquake, one must perform two ṣalāt al‑āyāts.