A young girl had her menstrual period and she was fasting during the days of menstruation due to ignorance
Question:
“A young girl had her menstrual period and she was fasting during the days of menstruation due to ignorance; what is incumbent upon her?”
Answer:
“She must make up for the days which she fasted while she was menstruating, because fasting on the days of menstruation is not accepted, and it is invalid, even if she was ignorant, and there is no limit to the time for making up missed fasts
And there is another question opposite to this one: A woman whose period came to her when she was young and she was embarrassed to tell her family, so she was not fasting. It is incumbent upon this young girl to make up for the month which she did not fast, because when a girl begins to menstruate, she becomes legally responsible, since menstruation is one of the signs of reaching maturity.”
Shaykh Muhammad bin Saalih al-'Uthaymeen, may Allah have mercy upon him
Source: Question 396, from the book “Islamic verdicts on the Pillars of Islam (Fatawa Arkanul-Islam)”, by Shaykh Muhammad bin Saalih al-'Uthaymeen. Collected and arranged by Fahd bin Nasir bin Ibrahim As-Sulaiman. Translated and published by Darussalam.
“A young girl had her menstrual period and she was fasting during the days of menstruation due to ignorance; what is incumbent upon her?”
Answer:
“She must make up for the days which she fasted while she was menstruating, because fasting on the days of menstruation is not accepted, and it is invalid, even if she was ignorant, and there is no limit to the time for making up missed fasts
And there is another question opposite to this one: A woman whose period came to her when she was young and she was embarrassed to tell her family, so she was not fasting. It is incumbent upon this young girl to make up for the month which she did not fast, because when a girl begins to menstruate, she becomes legally responsible, since menstruation is one of the signs of reaching maturity.”
Shaykh Muhammad bin Saalih al-'Uthaymeen, may Allah have mercy upon him
Source: Question 396, from the book “Islamic verdicts on the Pillars of Islam (Fatawa Arkanul-Islam)”, by Shaykh Muhammad bin Saalih al-'Uthaymeen. Collected and arranged by Fahd bin Nasir bin Ibrahim As-Sulaiman. Translated and published by Darussalam.