The Prophet ﷺ used to (put) bend his head (out) to me while he was in Iʿtikaf in the mosque during my monthly periods and I would comb and oil his hair.  

كَانَ النَّبِيُّ ﷺ يُصْغِي إِلَىَّ رَأْسَهُ وَهْوَ مُجَاوِرٌ فِي الْمَسْجِدِ فَأُرَجِّلُهُ وَأَنَا حَائِضٌ