The Book of Purification
1/176. Chapter:
A Menstruating Woman Washing Her Husband's Head
Sunan an-Nasai
أَخْبَرَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، عَنْ مَالِكٍ، عَنْ هِشَامِ بْنِ عُرْوَةَ، عَنْ أَبِيهِ، عَنْ عَائِشَةَ، - رضى الله عنها - قَالَتْ كُنْتُ أُرَجِّلُ رَأْسَ رَسُولِ اللَّهِ صلى الله عليه وسلم وَأَنَا حَائِضٌ .
It was narrated that 'Aishah said: "I used to comb the hair of the Messenger of Allah (ﷺ) when I was menstruating."
Reference : Sunan an-Nasa'i 277In-book reference : Book 1, Hadith 278English translation : Vol. 1, Book 1, Hadith 278