It has been held by this Court in a catena of cases including Sharad Birdhichand Sarda v. State of Maharashtra reported at (1984) 4 SCC 116, that suspicion, howsoever strong, cannot substitute proof beyond reasonable doubt. This Court has held that there is not only a grammatical but also a legal distinction between ‘may’ and ‘must’. For proving a case based on circumstantial evidence, it is necessary for the prosecution to establish each and every circumstance beyond reasonable doubt, and further, that the circumstances so proved must form a complete chain of evidence so as not to leave any reasonable ground for the conclusion consistent with the innocence of the accused and must show, in all human probability, that the act has been done by the accused. Further, it has been held that the facts so established must exclude every hypothesis except the guilt of the accused. Para 9
[Ram Pratap v. State of Haryana, (2023) 2 SCC 345]