Section 423 in The Code of Criminal Procedure
Title: Warrant for levy of fine issued by a Court in any territory to which this Code does not extend
Notwithstanding anything contained in this Code or in any other law for the time being in force, when an offender has been sentenced to pay a fine by a Criminal Court in any territory to which this Code does not extend and the Court passing the sentence issues a warrant to the Collector of a district in the territories to which this Code extends, authorising him to realise the amount as if it were an arrear of land revenue, such warrant shall be deemed to be a warrant issued under clause (b) of sub-section (1) of section 421 by a Court in the territories to which this Code extends, and the provisions of sub-section (3) of the said section as to the execution of such warrant shall apply accordingly
Title: Suspension of execution of sentence of imprisonment
(1) When an offender has been sentenced to fine only and to imprisonment in default of payment of the fine, and the fine is not paid forthwith, the Court may--
(a) order that the fine shall be payable either in full on or before a date not more than thirty days from the date of the order, or in two or three instalments, of which the first shall be payable on or before a date not more than thirty days from the date of the order and the other or others at an interval or at intervals, as the case may be, of not more than thirty days;
(b) suspend the execution of the sentence of imprisonment and release the offender, on the execution by the offender of a bond, with or without sureties, as the Court thinks fit, conditioned for his appearance before the Court on the date or dates on or before which payment of the fine or the instalments thereof, as the case may be, is to be made; and if the amount of the fine or of any instalment, as the case may be, is not realised on or before the latest date on which it is payable under the order, the Court may direct the sentence of imprisonment to be carried into execution at once.
(2) The provisions of sub-section (1) shall be applicable also in any case in which an order for the payment of money has been made on non-recovery of which imprisonment may be awarded and the money is not paid forthwith; and, if the person against whom the order has been made, on being required to enter into a bond such as is referred to in that sub-section, fails to do so, the Court may at once pass sentence of imprisonment.
Title: Who may issue warrant
Every warrant for the execution of a sentence may be issued either by the Judge or Magistrate who passed the sentence, or by his successor-in-office.
Title: Sentence on escaped convict when to take effect
(1) When a sentence of death, imprisonment for life or fine is passed under this Code on an escaped convict, such sentence shall, subject to the provisions hereinbefore contained, take effect immediately.
(2) When a sentence of imprisonment for a term is passed under this Code on an escaped convict,---
(a) if such sentence is severer in kind than the sentence which such convict was undergoing when he escaped, the new sentence shall take effect immediately;
(b) if such sentence is not severer in kind than the sentence which such convict was undergoing when he escaped, the new sentence shall take effect after he has suffered imprisonment for a further period equal to that which, at the time of his escape, remained unexpired of his former sentence.
(3) For the purposes of sub-section (2), a sentence of rigorous imprisonment shall be deemed to be severer in kind than a sentence of simple imprisonment.
Title: Sentence on offender already sentenced for another offence
(1) When a person already undergoing a sentence of imprisonment is sentenced on a subsequent conviction to imprisonment or imprisonment for life, such imprisonment or imprisonment for life shall commence at the expiration of the imprisonment to which he has been previously sentenced, unless the Court directs that the subsequent sentence shall run concurrently with such previous sentence:
Provided that where a person who has been sentenced to imprisonment by an order under section 122 in default of furnishing security is, whilst undergoing such sentence, sentenced to imprisonment for an offence committed prior to the making of such order, the latter sentence shall commence immediately.
(2) When a person already undergoing a sentence of imprisonment for life is sentenced on a subsequent conviction to imprisonment for a term or imprisonment for life, the subsequent sentence shall run concurrently with such previous sentence