Mu'adhah bint 'Abdullah معاذة بنت عبد الله · The Book of Menstruation and Istihadah

"A woman asked 'Aishah: 'Should a menstruating woman make up the Salah she misses? She said: 'Are you a Haruri? We used to menstruate during the time of Allah's Messenger (ﷺ) but we did not make up the missed Salah nor were we commanded to do so.'" Meaning are you one of the Khawarij. Harura is a place associated with a group of the Khawarij.