Hunted for being pure, say (6)
I believe the answer is:
chased
'hunted' is the definition.
(I've seen this before)
'pure say' is the wordplay.
'pure' becomes 'chaste' (chaste means abstaining from sex).
'say' indicates a 'sounds like' (homophone) clue.
'chaste' is a homophone of 'CHASED'.
'for being' is the link.
(Other definitions for chased that I've seen before include "Hunted" , "Engraved; rushed" , "Pursued at speed" , "Decorated metal with engraved or embossed work" , "Went after with the intent to catch" .)