see this article in the full MAL
article 16. Competence of arbitral tribunal to rule on its jurisdiction
(1) The arbitral tribunal may rule on its own jurisdiction, including any objections with respect to the existence or validity of the arbitration agreement. For that purpose, an arbitration clause which forms part of a contract shall be treated as an agreement independent of the other terms of the contract. A decision by the arbitral tribunal that the contract is null and void shall not entail ipso jure the invalidity of the arbitration clause.
SEE ALSO THE SEPARATE ENTRIES FOR THE OTHER SECTIONS OF THIS ARTICLE.