Mass. Gen. Laws ch. 259, § 4: Representation as to another's credit; necessity of writing

Section 4. No action shall be brought to charge a person upon or by reason of a representation or assurance made concerning the character, conduct, credit, ability, trade or dealings of any other person, unless such representation or assurance is made in writing and signed by the party to be charged thereby, or by some person thereunto by him lawfully authorized.