Sarjoo Prosad, J.

1. The defendant is the appellant in this appeal which relates to a suit for injunction and accounts. The plaintiff in the action took in lease a piece of land in Mohalla Sabzibagh of the Patna town from the City Municipality for the purpose of installing a petrol pump and erecting a shop for motor accessories. The lease was under a registered document dated 29th March 1941, for a term of five years with option for renewal for a further period of five years. After obtaining the lease, the plaintiff put up a temporary shed on the site and got a petrol pump installed, and he ran the business under the name and style of Ali & Sons. Finding some difficulties in carrying on the business, the plaintiff on 28th August 1945, entered into an agreement with the defendant. The terms of the agreement have assumed some importance in the case and may have to be referred to in some detail at a later stage in the judgment. For the present it may be sufficient to observe that the purport of the agreement was to transfer the entire management of the shop to the defendant, and the plaintiff in consideration thereof was entitled to the payment of a monthly premium of Bs. 20 o