Complete the sentence “Spot Avtaar’s Eastern ...” (2,4)

I believe the answer is:

do time

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'complete the sentence' is the definition.
I can't judge whether this definition defines the answer.

'spot avtaar's eastern' is the wordplay.
'spot' becomes 'dot' (I've seen this before).
'avtaar's' becomes 'I'm' (where the crossword setter is 'Avtaar').
'eastern' becomes 'e'.
'dot'+'im'+'e'='DO TIME'

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(Other definitions for do time that I've seen before include "Serve a prison sentence" , "Serve porridge" .)

I've seen this clue in The Hindu.

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