(1) 120[Save in cases provided for under the proviso to section 15,] it shall not be lawful for the tenant or any person acting or purporting to act on behalf of the tenant to claim or receive any sum, or any consideration as a condition of the relinquishment 121[transfer or assignment] of his tenancy of any premises.
(2) Any tenant or person who in contravention of the provisions of subsection (1) receives any sum or consideration shall, on conviction, be punished with imprisonment for a term which may extend to six months and shall also be punished with fine which shall not be less than the sum of the value of the consideration received by him.
20. Any amount paid on account of rent after the date of the coming into operation of this Act shall, except in so far as payment thereof is in accordance with the provisions of this Act, be recoverable by the tenant from the landlord to whom it was paid or on whose behalf it was received or from his legal representative at anytime within a period of six months from the date of payment and may, without prejudice to any other remedy for recovery, be deducted by such tenant from any rent payable by him to such landlord.