¹[25A. (1) When the rent of a taluk, tenure, holding or tenancy is less than the rent or revenue payable by the landlord of such taluk, tenure, holding or tenancy to his superior landlord or the Government, as the case may be, the rent of such taluk, tenure, holding or tenancy may be enhanced by the Revenue-officer to an amount not less than the rent or revenue payable by such landlord in respect of such taluk, tenure, holding or tenancy: Provided that when any such taluk, tenure, holding or tenancy comprises a portion of the land of the parent estate, taluk, tenure, holding or tenancy, the Revenue-officer shall, in determining the amount of enhancement of the rent under this section, take into consideration the rents payable to such landlord for any lands and the rental value of any lands in the khas possession of such landlord included in the remaining portion of the land of the parent estate, taluk, tenure, holding or tenancy.] (2) Where any land held by a tenure holder, a raiyat, an under-raiyat or a non-agricultural tenant is liable to be assessed to rent, but no rent has been assessed in respect thereof, the Revenue-officer shall determine the rent payable by such tenure holder according to the principle of section 7 of the Bengal Tenancy Act, 1885, and by such raiyat or under-raiyat or non-agricultural tenant according to the principle of section 26.