Code of Criminal Procedure Act, 1973
429.Saving.-
(1) Nothing in section 426 or section 427
shall be held to excuse any person from any part of the punishment to which he
is liable upon his former or subsequent conviction.
(2) When an award of imprisonment in default of payment of a fine is annexed to
a substantive sentence of imprisonment and the person undergoing the sentence
is after its execution to undergo a further substantive sentence or further
substantive sentences of imprisonment, effect shall not be given to the award
of imprisonment in default of payment of the fine until the person has
undergone the further sentence or sentences.