What is the ruling regarding the fast of a woman whose bleeding stopped, but she doubted her purity, so she performed ghusl, prayed, and fasted? Does she need to make up the fast or offer expiation?

Purity from menstruation has two signs: the dryness of the spot and the sight of the white discharge. Dryness is the complete cessation of blood. If a woman sees one of these two signs at the time of prayer, she must purify herself and pray. Therefore, the cessation of blood indicates purity, and the ritual bath, prayer, and fasting of the woman with discharge are valid.