Where does “dʰr̥s-u-” come from?
dʰr̥s-u- (Proto-Indo-European) comes from Proto-Indo-European dʰers-, from Proto-Indo-European dʰer- — to support; to hold.
dʰr̥s-u- (Proto-Indo-European) comes from Proto-Indo-European dʰers-, from Proto-Indo-European dʰer- — to support; to hold.