980 (2) Where any such land was in the personal cultivation of the thekedar on the date immediately preceding the date of vesting, the same shall (a) if it was sir or khudkasht of the lessor on the date of the grant of the theka, be deemed for purposes of Section 18, to be the sir or khudkasht of the lessor on the date immediately preceding the date of vesting and the thekedar shall, with effect from the date of vesting, become the asami thereof liable to pay rent at hereditary rates applicable on the date immediately preceding the date of vesting and entitled to hold the land as such for the unexpired period of the theka or for a period of five years from the date of vesting whichever is less; (b) if it was not sir or khudkasht of the lessor on the date of the grant of the theka and (i) its area does not exceed thirty acres, be deemed for purposes of Section 19 to have been held by the thekedar as a hereditary tenant liable to pay rent which shall be equal to the rent calculated at hereditary rates applicable on the date immediately preceding the date of vesting.