Two I will leave in state of equality (3)
I believe the answer is:
par
'state of equality' is the definition.
(I've seen this before)
'two i will leave' is the wordplay.
'two' becomes 'pair' (pair is a kind of two).
'will leave' suggests deleting specific letters.
'pair' with 'i' taken out is 'PAR'.
'in' acts as a link.
(Other definitions for par that I've seen before include "normal amount" , "Face value; equal standing" , "Normal number of strokes for a hole at golf" , "Target score (golf)" , "Average score for good golf player" .)