When is a fact said to be proved under presumption of culpable mental state

A fact is said to be proved only when the Court believes it to exist beyond reasonable doubt and not merely when its existence is established by a preponderance of probability

(ICAI FAQ PUBLICATIONS 06-09-2017 Cognizance of offences, Presumption of culpable mental state and Relevancy of statements under certain circumstances: FAQ NO. 36)