Purity: Consequence of Neglecting Istiḥāḍah Duties
Practical Laws of Islam as per the teachings of Ayatullah Sistani
Ruling 424:
If a mustaḥāḍah does not perform any of the acts that are obligatory for her, her prayers are invalid.
-Ayatullah Sistani, Practical Laws of Islam, Purification (Taharah)


