I saw the Messenger of Allah ﷺ rubbing his toes with his little finger when he performed ablution.  

رَأَيْتُ رَسُولَ اللَّهِ ﷺ إِذَا تَوَضَّأَ يَدْلُكُ أَصَابِعَ رِجْلَيْهِ بِخِنْصَرِهِ