Texas Rule of Evidence 803(24)
Rule of Evidence 803(24) provides for an exception to the hearsay rule for statements against the declarant's interest.
It does not provide an exception for a declarant's statements against someone else's interest, such as a third party, co-actor, or co-defendant, unless the statement against the other person's interest is also sufficiently against the declarant's interest to be considered reliable. Guidry v. State, 9 S.W.3d 133, 149 (Tex. Crim. App. 1999).