Sunan an-Nasa'i, Book 3, Hadith 42 (In-Book) ⓘ
It was narrated that 'Aishah said: "I used to comb the hair of the Messenger of Allah while I was menstruating."
أَخْبَرَنَا قُتَيْبَةُ، عَنْ مَالِكٍ، عَنْ هِشَامِ بْنِ عُرْوَةَ، عَنْ أَبِيهِ، عَنْ عَائِشَةَ، قَالَتْ كُنْتُ أُرَجِّلُ رَأْسَ رَسُولِ اللَّهِ صلى الله عليه وسلم وَأَنَا حَائِضٌ .
also referenced under: Hadith 389 (Reference) & Volume 1, Book 3, Hadith 389 (DarusSalam)