Mens rea of the accused has much relevance in a case when the benefit under Section 84 IPC has been pleaded by an accused. So when the prosecution in this case failed to prove any motive behind the incident it would also raise a reasonable doubt of mens rea in doing the act. So as per the proposition of law laid down above, it would be a fact which creates a reasonable doubt entitling the accused to get the benefit of the exception. In other words absence of proof of motive from the side of the prosecution creates a doubt in the mind of the court regarding the mens rea entitling the accused for an acquittal. [Para No.44]
Though the contention of the learned counsel for the accused that medical evidence adduced from the side of the prosecution would not prove the unsoundness of mind at the time of the commission of the offence even if accepted the attending circumstances brought out during the oral evidence of the witnesses coupled with the medical evidence would create a reasonable suspicion about the soundness of the mind of the accused at the time of commission of the act. That also would enable the accused for benefit of doubt entitling for an acquittal on the ground that the general burden of proof resting on the prosecution is not discharged.[Para No.45]
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