The Book of Menstruation
وَحَدَّثَنَا يَحْيَى بْنُ يَحْيَى، أَخْبَرَنَا أَبُو خَيْثَمَةَ، عَنْ هِشَامٍ، أَخْبَرَنَا عُرْوَةُ، عَنْ عَائِشَةَ، أَنَّهَا قَالَتْ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم يُدْنِي إِلَىَّ رَأْسَهُ وَأَنَا فِي حُجْرَتِي فَأُرَجِّلُ رَأْسَهُ وَأَنَا حَائِضٌ .Urwa reported it from 'A'isha that she observed:The Messenger of Allah (ﷺ) inclined his head towards me (from the mosque) while I was in my apartment and I combed it in a state of menstruation
From Sahih Muslim, whose reports the scholars accept as authentic.