No mortgage of any land by a Bhumiswami shall be valid unless the following land is left with him free…

A mortgage by a Bhumiswami is invalid unless "5 acres irrigated or 10 acres unirrigated" land is left with him free from the charge, so that his subsistence holding is protected; lesser areas such as "2 acres irrigated or 3 acres unirrigated land", "3 acres irrigated or 4 acres unirrigated land" or "1 acre irrigated or 2 acres unirrigated land" do not satisfy the requirement.