Please note: this fatwa has been translated by artificial intelligence.
Question
How is the habit established in menstruation?
Answer
I say, and with God's help: The habit is established from anyone who has previously had a menstrual period and a valid purification, or one of them, even if it is just once. Refer to: Dhakhr al-Mutahhilin and Manhal al-Waridin, pages 38-40, and others. And God knows best.