كتاب الحيض
3
The Book of Menstruation
(3)
Chapter: 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
(3)
باب جَوَازِ غَسلِ الْحَائِضِ رَأْسَ زَوْجِهَا وَتَرْجِيلِهِ وَطَهَارَةِ سُؤْرِهَا وَالاِتِّكَاءِ فِي حِجْرِهَا وَقِرَاءَةِ الْقُرْآنِ فِيهِ
Sahih Muslim 300

'A'isha reported:

I would drink when I was menstruating, then I would hand it (the vessel) to the Apostle (ﷺ) and he would put his mouth where mine had been, and drink, and I would eat flesh from a bone when I was menstruating, then hand it over to the Apostle (ﷺ) and he would put his mouth where mine had been. Zuhair made no mention of (the Holy Prophet's) drinking.
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، وَزُهَيْرُ بْنُ حَرْبٍ، قَالاَ حَدَّثَنَا وَكِيعٌ، عَنْ مِسْعَرٍ، وَسُفْيَانَ، عَنِ الْمِقْدَامِ بْنِ شُرَيْحٍ، عَنْ أَبِيهِ، عَنْ عَائِشَةَ، قَالَتْ كُنْتُ أَشْرَبُ وَأَنَا حَائِضٌ، ثُمَّ أُنَاوِلُهُ النَّبِيَّ صلى الله عليه وسلم فَيَضَعُ فَاهُ عَلَى مَوْضِعِ فِيَّ فَيَشْرَبُ وَأَتَعَرَّقُ الْعَرْقَ وَأَنَا حَائِضٌ ثُمَّ أُنَاوِلُهُ النَّبِيَّ صلى الله عليه وسلم فَيَضَعُ فَاهُ عَلَى مَوْضِعِ فِيَّ ‏.‏ وَلَمْ يَذْكُرْ زُهَيْرٌ فَيَشْرَبُ ‏.‏
Reference : Sahih Muslim 300
In-book reference : Book 3, Hadith 14
USC-MSA web (English) reference : Book 3, Hadith 590
  (deprecated numbering scheme)