The World Federation One Stop Fiqh

Ruling 420

If bleeding stops during prayers and a mustaḥāḍah does not know whether or not the bleeding has also stopped internally, or, if she does not know whether or not her istiḥāḍah will stop for long enough for her to obtain ritual purity (ṭahārah) [i.e. to perform wuḍūʾ or ghusl, according to her duty] and to perform all or part of the prayer, then based on obligatory precaution, she must perform wuḍūʾ or ghusl – according to her duty – and perform the prayer again.