Most of the quarrel comes from parsimony (6)
I believe the answer is:
thrift
'parsimony' is the definition.
('thrift' can be a synonym of 'parsimony')
'most of the quarrel' is the wordplay.
'most of' means to remove the last letter.
'quarrel' becomes 'rift' (I've seen this in other clues).
'the' with its final letter taken off is 'th'.
'th'+'rift'='THRIFT'
'comes from' is the link.
(Other definitions for thrift that I've seen before include "Taking care of money" , "Being frugal" , "Careful control of resources" , "Carefulness with money" , "Maritime growth" .)