question #2 Sahih al-Bukhari 4908, Book 65, Hadith 428 : Why is it important to consider the wife’s menstrual cycle when issuing a divorce in Islam?

That `Abdullah bin `Umar told him that he had divorced his wife while she was in her menses so
`Umar informed Allah’s Messenger (ﷺ)
of that. Allah’s Messenger (ﷺ) became very angry at that and said, “(Ibn `Umar must return her to his house
and keep her as his wife till she becomes clean and then menstruates and becomes clean again,
whereupon, if he wishes to divorce her, he may do so while she is still clean and before having any
sexual relations with her, for that is the legally prescribed period for divorce as Allah has ordered.”