سُنَنُ النَّسَائِيِّ
Sunan an-Nasa’i 389
The Book of Menstruation and Istihadah
A Menstruating Woman Washing Her Husband's Head
أَخْبَرَنَا قُتَيْبَةُ، عَنْ مَالِكٍ، عَنْ هِشَامِ بْنِ عُرْوَةَ، عَنْ أَبِيهِ، عَنْ عَائِشَةَ، 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) while I was menstruating."
Sunan an-Nasa'i, 389Sahih (Darussalam)