Retaliation in kind from tart, fit to burst (3,3,3)
I believe the answer is:
tit for tat
'retaliation in kind' is the definition.
(I've seen this before)
'tart fit to burst' is the wordplay.
'burst' indicates anagramming the letters.
'tart'+'fit'+'to'='tartfitto'
'tartfitto' with letters rearranged gives 'TIT-FOR-TAT'.
'from' is the link.
(Other definitions for tit for tat that I've seen before include "Repayment in kind" , "Retaliation called for" , "satisfaction" , "Appropriate retaliation" , "protection given to Barnet" .)