12(1)In like manner, where an executor liable as such to the rent, covenants or agreements contained in a conveyance on chief rent or rent charge, whether any such rent is by limitation of use, grant or reservation, or agreement for such conveyance, granted or assigned to or made and entered into with the person whose estate is being administered, has satisfied all such liabilities under the said conveyance or agreement for a conveyance as may have accrued due and been claimed up to the time of the conveyance hereafter mentioned, and shall have set apart a sufficient fund to answer any future claim that may be made in respect of any fixed and ascertained sum, covenanted or agreed by the grantee, to be laid out on the property conveyed or agreed to be conveyed, although the period for laying out the same may not have arrived, and shall have conveyed such property, or assigned the said agreement for such conveyance as aforesaid to a purchaser thereof, he shall be at liberty to distribute the residuary estate of the deceased to and amongst the parties entitled thereto respectively, without appropriating any part, or further part, as the case may be, of the personal estate of the deceased to meet any future liability under the said conveyance, or agreement for a conveyance; and the executor so distributing the residuary estate shall not, after having made or executed such conveyance or assignment, and having, where necessary, set apart a sufficient fund as aforesaid, be personally liable in respect of any subsequent claim under the said conveyance or agreement for a conveyance.