"I divorced my wife while she was menstruating."Umar mentioned this to the Prophet ﷺ, and the Messenger of Allah ﷺ became angry. He then said, "Order him to take her back until she completes another menstrual cycle, separate from the one in which he divorced her. Then, if he still wishes to divorce her, let him do so when she is pure and before he has touched her. That is the divorce prescribed for the waiting period as Allah commanded."Abdullah had pronounced one divorce, and it was counted as a divorce against him. Abdullah then took her back as the Messenger of Allah ﷺ had instructed him.
حدثني عبد بن حميد أخبرني يعقوب بن إبراهيم حدثنا محمد وهو ابن أخي الزهري عن عمه أخبرنا سالم بن عبد الله أن
طلقت امرأتي وهي حائض فذكر ذلك عمر للنبي ﷺ فتغيظ رسول الله ﷺ ثم قال مره فليراجعها حتى تحيض حيضة أخرى مستقبلة سوى حيضتها التي طلقها فيها فإن بدا له أن يطلقها فليطلقها طاهرا من حيضتها قبل أن يمسها فذلك الطلاق للعدة كما أمر الله وكان عبد الله طلقها تطليقة واحدة فحسبت من طلاقها وراجعها عبد الله كما أمره رسول الله ﷺ