Question
Ten minutes before Maghrib, I confirmed that my menstrual period had not started. After I finished breaking my fast, I went to perform ablution and saw blood. How can I be sure whether it was before or after the call to prayer?
Answer
I say, and with God's help: Certainty is not removed by doubt, so as long as you are not certain that your menstruation came to you before Maghrib, your fast is valid, and God knows best.