Abu Zubayr reported,

Abu Zubayr reported that he heard Abdul-Rahman bin Ayman asking Ibn Umar, while Abu Zubayr was listening, "What is your view concerning a man who divorces his wife while she is menstruating?"Abdullah bin Umar replied, "I divorced my wife while she was menstruating during the lifetime of the Messenger of Allah ﷺ. Umar asked the Messenger of Allah ﷺ about it, saying, 'Abdullah bin Umar has divorced his wife while she was menstruating.' The Messenger of Allah ﷺ said, 'Let him take her back.' So he returned her to me and said, 'When she becomes pure, let him divorce her or keep her.'"Ibn Umar said that the Prophet ﷺ then recited, "Prophet, when you divorce women, divorce them" [Talaq 65:1], at the start of their waiting period.

أخبرني محمد بن إسمعيل بن إبراهيم وعبد الله بن محمد بن تميم عن حجاج قال

قال ابن جريج أخبرني أبو الزبير

أنه سمع عبد الرحمن بن أيمن يسأل ابن عمر وأبو الزبير يسمع كيف ترى في رجل طلق امرأته حائضا فقال له طلق عبد الله بن عمر امرأته وهي حائض على عهد رسول الله ﷺ فسأل عمر رسول الله ﷺ فقال إن عبد الله بن عمر طلق امرأته وهي حائض فقال رسول الله ﷺ ليراجعها فردها علي قال إذا طهرت فليطلق أو ليمسك قال ابن عمر فقال النبي ﷺ {يا أيها النبي إذا طلقتم النساء فطلقوهن} في قبل عدتهن