كتاب الطهارة
1  
The Book of Purification
(176)
Chapter: A Menstruating Woman Washing Her Husband's Head
(176)
باب غَسْلِ الْحَائِضِ رَأْسَ زَوْجِهَا
Sunan an-Nasa'i 276
It was narrated that 'Aishah said:
"The Prophet (ﷺ) would put his head out for me while he was performing I'tikaf [1] and I would wash it, when I was menstruating." [1] Mujawir ("next door") here means while performing I'tikaf.
أَخْبَرَنَا مُحَمَّدُ بْنُ سَلَمَةَ، قَالَ حَدَّثَنَا ابْنُ وَهْبٍ، عَنْ عَمْرِو بْنِ الْحَارِثِ، وَذَكَرَ، آخَرُ عَنْ أَبِي الأَسْوَدِ، عَنْ عُرْوَةَ، عَنْ عَائِشَةَ، - رضى الله عنها - قَالَتْ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم يُخْرِجُ إِلَىَّ رَأْسَهُ مِنَ الْمَسْجِدِ وَهُوَ مُجَاوِرٌ فَأَغْسِلُهُ وَأَنَا حَائِضٌ ‏.‏
Grade: Sahih (Darussalam)
Reference : Sunan an-Nasa'i 276
In-book reference : Book 1, Hadith 277
English translation : Vol. 1, Book 1, Hadith 277