Anas reported that the ring of Allah's Apostle ﷺ was on this, and he pointed toward the little finger of his left hand.  

كَانَ خَاتِمُ النَّبِيِّ ﷺ فِي هَذِهِ وَأَشَارَ إِلَى الْخِنْصَرِ مِنْ يَدِهِ الْيُسْرَى