A provision in a trust instrument that purports to penalize an interested person for contesting the trust instrument or instituting other proceedings or actions relating to the trust property is unenforceable if probable cause exists for the contest, proceedings or actions.
A.R.S. § 14-10113
Penalty clause for contest; restriction
Official source: Arizona State Legislature. Reproduced from public-domain Arizona statutes; confirm against the official source for the current text. Not legal advice.