"The Prophet ﷺ would put his head out while he was in I'tikaf and I would wash it, while I was menstruating." (Using translation from Nasāʾī 275)  

كَانَ النَّبِيُّ ﷺ «يُومِئُ إِلَيَّ بِرَأْسِهِ وَهُوَ مُعْتَكِفٌ فَأَغْسِلُهُ وَأَنَا حَائِضٌ»