Sahih Muslim 298
Sahih Muslim · Book 3: The Book of Menstruation · It is permissible for a menstruating woman to wash her husband’s head, and comb his hair; her leftovers are pure (tahir); and regarding reclining in her lap and reciting Qur’an
'A'isha reported:
حَدَّثَنَا أَبُو كُرَيْبٍ ، حَدَّثَنَا ابْنُ أَبِي زَائِدَةَ ، عَنْ حَجَّاجٍ ، وَابْنِ أَبِي غَنِيَّةَ ، عَنْ ثَابِتِ بْنِ عُبَيْدٍ ، عَنِ الْقَاسِمِ بْنِ مُحَمَّدٍ ، عَنْ عَائِشَةَ ، قَالَتْ أَمَرَنِي رَسُولُ اللَّهِ صلى الله عليه وسلم أَنْ أُنَاوِلَهُ الْخُمْرَةَ مِنَ الْمَسْجِدِ . فَقُلْتُ إِنِّي حَائِضٌ . فَقَالَ " تَنَاوَلِيهَا فَإِنَّ الْحَيْضَةَ لَيْسَتْ فِي يَدِكِ " .
The Messenger of Allah (ﷺ) ordered me that I should get him the mat from the mosque. I said: I am menstruating. He (the Holy Prophet) said: Do get me that, for menstruation is not in your hand.