Judgments, orders or decrees, other than those mentioned in sections 40, 41 and 42, are irrelevant, unless the existence of such judgment, order or decree, is a fact in issue or is relevant under some other provisions of this Act.
Illustrations
(a) A and B separately sue C for a libel which reflects upon each of them. C in each case says that the matter alleged to be libellous is true, and the circumstances are such that it is probably true in each case, or in neither.
(b) A prosecutes B for adultery with C, A's wife.
(c) A prosecutes B for stealing a cow from him. B is convicted.
(d) A had obtained a decree for the possession of land against B. C, B's son, murders A in consequence.
(f) A is tried for the murder of B.