(a)No licensee shall have in his possession at any time rectified spirit in a quantity in excess of the prescribed possession limit, without the prior sanction of the Excise Commissioner. The Excise Commissioner may permit the possession of rectified spirit by a licensee up to 50,000 litres. Permission to licensee to possess more than 50,000 litres of rectified spirit at any time shall be granted with the previous sanction of the Government;