Chapter: "O Prophet! When you divorce women, divorce them at their 'Idda and count their 'Idda."

Hadith Number 5251

setting

Narrated `Abdullah bin `Umar

that he had divorced his wife while she was menstruating during the lifetime of Allah's Messenger (ﷺ). `Umar bin Al-Khattab asked Allah's Messenger (ﷺ) about that. Allah's Messenger (ﷺ) said, "Order him (your son) to take her back and keep her till she is clean and then to wait till she gets her next period and becomes clean again, whereupon, if he wishes to keep her, he can do so, and if he wishes to divorce her he can divorce her before having sexual intercourse with her; and that is the prescribed period which Allah has fixed for the women meant to be divorced."