Is it obligatory for the wife to make up the prayers she missed due to her cessation of worship after the fortieth day, based on a fatwa that yellow discharge with a little blood after the fortieth day is considered spotting (kudra)?

Blood after the maximum period of nifas (definition) (post-natal bleeding) is considered istihada (irregular bleeding), unless it coincides with the woman's regular menstrual period, in which case it is considered menses. Scholars differed concerning the maximum duration of nifas; most are of the opinion that it is forty days, while Malik, Al-Shafi'i, and others held that it is sixty days.