Purity: Delays When Bleeding Temporarily Stops

Practical Laws of Islam as per the teachings of Ayatullah Sistani

Ruling 409:

If after performing wuḍūʾ and ghusl the bleeding appears to have stopped and a mustaḥāḍah knows that if she delays the prayer her istiḥāḍah will stop for long enough for her to perform wuḍūʾ, ghusl, and prayers, then based on obligatory precaution, she must delay the prayer; and when her istiḥāḍah completely stops, she must perform wuḍūʾ and ghusl again and perform the prayer. Furthermore, if when the bleeding appears to have stopped, the time for prayers is short, it is not necessary for her to perform wuḍūʾ and ghusl again; rather, she can perform prayers with the wuḍūʾ and ghusl that she already has.

-Ayatullah Sistani, Practical Laws of Islam, Purification (Taharah)