Personal property of a debtor which is subject to a mortgage, pledge or lien, and of which he has the right of redemption, or personal property sold under a contract of conditional sale reserving title in the vendor, may be attached and held as if it were unencumbered, if the attaching creditor pays or tenders to the mortgagee, pledgee, lienor, conditional vendor, or his assigns, the amount for which the property is so liable within ten days after demand as hereinafter provided.
Massachusetts Legal Code