The Book of Purification
1/176. Chapter:
A Menstruating Woman Washing Her Husband's Head
Sunan an-Nasai
أَخْبَرَنَا عَمْرُو بْنُ عَلِيٍّ، قَالَ حَدَّثَنَا يَحْيَى، قَالَ حَدَّثَنَا سُفْيَانُ، قَالَ حَدَّثَنِي مَنْصُورٌ، عَنْ إِبْرَاهِيمَ، عَنِ الأَسْوَدِ، عَنْ عَائِشَةَ، - رضى الله عنها - قَالَتْ كَانَ النَّبِيُّ صلى الله عليه وسلم يُومِئُ إِلَىَّ رَأْسَهُ وَهُوَ مُعْتَكِفٌ فَأَغْسِلُهُ وَأَنَا حَائِضٌ .
It was narrated that 'Aishah said: "The Prophet (ﷺ) would put his head out while he was in I'tikaf and I would wash it, while I was menstruating."
Reference : Sunan an-Nasa'i 275In-book reference : Book 1, Hadith 276English translation : Vol. 1, Book 1, Hadith 276