Mass. Gen. Laws ch. 266, § 80: Encumbered land; conveyance without notice

Section 80. Whoever conveys land, knowing that an encumbrance exists thereon, without informing the grantee, before the consideration is paid, of the existence and nature of such encumbrance, so far as he has knowledge thereof, shall be punished by imprisonment for not more than one year or by a fine of not more than one thousand dollars.