Question
If she becomes pure for less than ten days, which is less than her usual period, is it permissible for her husband to have intercourse with her?
Answer
I say, and with God's help: If the cessation occurs before the usual period, it does not permit intercourse in this case, meaning that if the blood stops before its usual time and she has performed the ritual washing, it is only permissible after the days of her usual period have passed; because returning to the usual period is common, so it is safer to avoid it. Refer to: Al-‘Umda 1: 132, Al-Hidaya 1: 32, and Sharh Al-Waqaya p. 127, and God knows best.