The occurrence of menstrual blood at a time other than its usual time

Question : What is the ruling? Regarding the ruling for a woman whose monthly period came before its usual time, so it came and she performed the full ritual bath before Ramadan entered, but then, eight days after Ramadan began, her period came at its natural time. What is the ruling regarding her leaving the prayer in that first instance? Does she have to make it up or not?

Answer : A woman does not have to make up the prayer if she caused the menstrual blood to come, because menstruation is blood, and whenever it is present, its ruling is present. Similarly, if she took something to prevent menstruation and the blood did not come, she prays and fasts and does not make up the fast, because she is not menstruating. The ruling revolves around its cause. Allah the Exalted said: So whenever this harm is present, its ruling is established, and whenever it is not present, its ruling is not established.