In case of debt guaranteed by surety, where the the title from which rises the debt guaranteed contains a clause bossial, not contained instead in the title from which it rises the warranty, the controversy between creditor guaranteed and fideiussore is attribute Ita to competence referee, not the the clause compromise being made worth from subjects strangers to contract in it is inserted, per the principle sanction by art. 1372 of the Italian Civil Code civ., second which the contract has force law parts.