Prospective operation of penal amendments limits NDPS sentencing relief where offence and conviction predate the amending law.

A substantive penal amendment under the NDPS framework is presumed to operate prospectively unless Parliament clearly indicates retrospective effect. The 2001 amendment introducing "small quantity" and "commercial quantity" and revising Section 21 sentencing did not apply to an offence and conviction that both pre-dated its commencement. The statutory scheme also suggested that concluded trials were not to be reopened, so the sentence remained governed by the law in force at the time of the offence and conviction. The later ameliorative sentencing regime therefore could not be invoked to reduce punishment in the pending appeal.

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Issues: Whether the amendment brought into force by the Narcotic Drugs and Psychotropic Substances (Amendment) Act, 2001 applied retrospectively to an offence committed and a conviction recorded before its commencement, so as to alter the sentence in an appeal pending thereafter.

Analysis: The amendment introduced the concepts of "small quantity" and "commercial quantity" and revised the sentencing scheme under Section 21 of the Narcotic Drugs and Psychotropic Substances Act, 1985. The offence and conviction in the case both pre-dated the commencement of the amending Act. The Court held that, absent express legislative intent, a substantive penal amendment is presumed to operate prospectively. It further noted that Parliament had indicated by the statutory scheme that concluded trials were not to be reopened, and that the relevant law for sentencing is the law in force at the time of the offence and conviction. Decisions applying the amendment to different factual or statutory settings did not justify a different result here.

Conclusion: The amending Act did not have retrospective operation for the appellant's case, and the sentence could not be reduced on that basis.

Final Conclusion: The appeal failed because the pre-amendment sentencing regime continued to govern the conviction and punishment.

Ratio Decidendi: A substantive penal amendment operates prospectively unless the legislature clearly indicates otherwise, and a convicted accused cannot claim the benefit of a later ameliorative sentencing amendment for an offence and conviction that both occurred before its commencement.

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