The provisions are as follows : 14(1) Provided that the Controller may, on an application made to him in the prescribed manner, make an order for the rec overy of possession of the premises on one or more of the following grounds only, namely (a). . . . . (b) that the tenant has, on or after the 9th day of June, 1952 sub let, assigned or otherwise parted with the possession of the whole or any part of the premises without obtaining the consent in writing of the landlord;" Sub section (4) of section 14 is as follows : "(4) For the purposes of clause (b) of the proviso to sub section (1),any premises which have been let for being used for the purposes of business or profession shall be deemed to have been sub let by the tenant, if the Controller is satisfied that the tenant without obtaining the consent in writing of the landlord has, after the 16th day of August, 1958, allowed any person or occupy the whole or any part of the premises ostensibly on the ground that such person is a partner of the tenant in the business or profession but really for the purpose of sub letting such premises to that person.