Prayer: Sequence of Making up a Sajdah and Performing Sajdata al-Sahw
Practical Laws of Islam as per the teachings of Ayatullah Sistani
Ruling 1247
With regard to someone who must make up a sajdah, if for some reason sajdatā al‑sahw becomes obligatory for him as well, then based on obligatory precaution, after prayers, he must first make up the sajdah and then perform sajdatā al‑sahw.