Massachusetts General Laws Part III. Courts, Judicial Officers and Proceedings in Civil Cases (Ch. 211-262) Ch. 241, § 10

If it is found that the petitioner is entitled to have partition for the share claimed or for any less share, the court shall make the interlocutory decree that partition be made, and therein determine the persons to whom and the proportions in which the shares shall be set off. The petition shall not be defeated by the payment by a party of a mortgage, lien, tax or other encumbrance upon the land, if the other parties are entitled to redeem from such payment; but the interlocutory decree shall contain such terms and conditions relative to redemption by a contribution on account of any such payment as the court may deem equitable.