Yunus bin Jubair said:
"I asked Ibn Umar about a man who divorced his wife while she was menstruating. So he said: 'Don't you know Abdullah bin Umar?' Indeed he divorced his wife while she was menstruating, so Umar asked…
Salim narrated that:
His father divorced his wife during her menses, so Umar asked the Prophet (ﷺ) about that and he said: "Tell him to take her back, then let him divorce her while she is pure or pregnant."