La. Code Civ. Proc. art. 2824
Current with operative changes from the 2024 Third Special Legislative Session
No fact which is an issue in a contradictory proceeding in a succession may be proved by affidavit under Articles 2821 and 2822. In all such contradictory proceedings, issues of fact shall be determined on the trial thereof only by evidence introduced as in ordinary cases.
La. C.P. § 2824