He surpassed Ruth (5)
I believe the answer is:
aaron
'he surpassed ruth' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for aaron that I've seen before include "Boy" , "- - Copland (mus.)" , "Brother of Moses who had blessed rod" , "Brother of Moses who founded the Jewish priesthood" , "Fanfare for the Common Man composer" .)