The principle of "Falsus in uno falsus in omnibus" is:

Falsus in uno, falsus in omnibus means "false in one thing, false in everything". Indian courts, for example in Nisar Ali v. State of U.P. (1957) and Gangadhar Behera v. State of Orissa (2002), have held that it is not a rule of law in India and is at most "only a rule of caution": the court must separate the truth from the falsehood rather than reject a witness's whole evidence because one part is false. It is not confined to civil cases.