(2)[ On receipt of reference under sub-section (1), the Collector shall, after giving the parties reasonable opportunity of being heard and after holding an enquiry in such manner as may be prescribed by rules under this Act, determine the value or consideration and the duty as aforesaid, and the deficient amount of duty, if any, alongwith interest at the rate of twelve per cent per annum on such deficient amount, shall be payable by the person liable to pay the duty from the date of registration of the instrument relating to such property to the date of payment of deficient amount of the duty;Provided that a person shall also be liable to pay penal interest at the rate of three per cent per annum, if there was an intentional omission or lapse on his part in not setting forth the correct market value of such property.] [Substituted by Punjab Act No. 15 of 2004.]