The pristine rule that the burden of proof is on the prosecution to prove the guilt of the accused should not be taken as a fossilised doctrine as though it admits no process of intelligent reasoning. The doctrine of presumption is not alien to the above rule, nor would it impair the temper of the rule. On the other hand, if the traditional rule relating to burden of proof of the prosecution is allowed to be wrapped in pedantic coverage the offenders in serious offences would be the major beneficiaries, and the society would be the casualty.
Presumption of fact is an inference as to the existence of one fact from the existence of some other facts, unless the truth of such inference is disproved. Presumption of fact is a rule in law of evidence that a fact otherwise doubtful may be inferred from certain other proved facts. When inferring the existence of a fact from other set of proved facts, the court exercises a process of reasoning and reach a logical conclusion as the most probable position. The above principle has gained legislative recognition in India when Section 114 is incorporated in the Evidence Act. It empowers the court to presume the existence of any fact which it thinks likely to have happened. In that process court shall have regard to the common course of natural events, human conduct etc. in relation to the facts of the case.
In Shambu Nath Mehra Vs. The State of Ajmer, the learned Judge has stated the legal principle thus:
This lays down the general rule that in a criminal case the burden of proof is on the prosecution and Section 106 is certainly not intended to relieve it of that duty. On the contrary, it is designed to meet certain exceptional cases in which it would be impossible, or at any rate disproportionately difficult for the prosecution to establish facts which are ‘especially’ within the knowledge of the accused and which he could prove without difficulty or inconvenience. The word ‘especially’ stresses that. It means facts that are pre-eminently or exceptionally within his knowledge.