Is it obligatory to make up for missed prayers due to ignorance of the religious ruling, and what is the ruling on one who stopped making them up then returned to doubt, and will Allah forgive her previous ignorance?

Scholars have differed on whether a woman becomes pure before Maghrib or before Fajr. The majority opinion is that if she becomes pure during the time of Asr, she must pray Dhuhr and Asr, and if she becomes pure during the time of Isha, she must pray Maghrib and Isha. This is the preponderant view. The Hanafis, however, hold that if she becomes pure during the time of Asr, she only needs to pray Asr, and if she becomes pure during the time of Isha, she only needs to pray Isha. When a woman becomes pure, she must perform ghusl and pray on time.

Scholars have also differed on the cessation of bleeding. Some believe that if bleeding stops before the completion of her usual period and she does not see the white discharge (al-Qassah al-Bayda'), she may wait for a day and a half to confirm the cessation of bleeding. The preponderant view among us is that purity is achieved with the cessation of bleeding. However, if she sees the white discharge, there is no disagreement regarding the obligation of ghusl.

Scholars have differed on making up prayers for one who missed them out of ignorance. The majority requires making them up, while Sheikh al-Islam Ibn Taymiyyah chose the view that making them up is not obligatory, and this is a strong opinion. If she is in doubt about the time of purity, she should adhere to the original state, which is the continuation of menstruation, until she achieves certainty of purity.

Scholars have differed on whether a woman who menstruates during the time of a prayer is required to make it up after she becomes pure. The preponderant view is that she is not required to do so.