(1) If the Commissioner or any person appointed under subsection (1) of section 3 to assist him in the course of any proceedings under this Regulation is satisfied that a dealer has maintained false or incorrect accounts with a view to suppressing his sales, purchases or stock of goods, has concealed any particulars of his sales or purchases or has furnished to, or produces before, any authority under this Regulation or the rules made thereunder, any account, return or information which is false or incorrect in any material particular, the Commissioner or such other person may, after giving the dealer a reasonable opportunity 'of being heard, direct him to pay, by way of penalty, in addition to the tax to which he is assessed or is liable to be assessed, an amount not exceeding one and a half times the amount of tax which would have been avoided if the accounts or figures or particulars were accepted as correct.
(2) If any person purchasing goods is guilty of any offence under clause (d) or clause (e) of sub-section (1) of section 35 the authority which granted to him or, as the case may be, is competent to grant to him a certificate of registration under this Regulation, may, after giving him a reasonable opportunity of being heard, by 'order in writing, impose upon him by way of penalty a sum not exceeding one and a half times the tax which would have been levied under this Regulation in respect of the sale to him of the goods, if the offence had not been committed.
37. If the Commissioner is satisfied that any person has acted in contravention of the provisions of section 19, he may, after giving such person a reasonable opportunity of being heard, direct him to pay, by way of penalty, a sum not exceeding one and a half times the tax collected in contravention of the said provisions.