Srinivasan, J.

This appeal arises out of a suit for specific performance instituted by the appellant here in. It is the case of the appellant that under Ex.A-1,dated 14. 1971 defendants l and 2 agreed to sell the suit properties at the rate of Rs.4,500 per acre. A sum of Rs. 10,000 was paid as advance on the date of agreement. The total consideration works out to Rs.66,040. Initially, it was agreed that the sale should be executed within a period of one year. On 4. 1972, an endorsement was made extending the period for completion of the transaction till 5. 1972. On 5. 1972 another endorsement was made by which the period was extended to 15. 1972. On 15. 1972 an endorsement was made evidencing payment of Rs.10,000 by way of further advance and extending the time to 18. 1972. There after, there was no extention of time as such. On 8. 1972 a sum of Rs.19,000 was paid and a receipt was executed by the second defendant in favour of the plaintiff. Thus, the plaintiff has paid a sum of Rs.39,000 in all. One Thirumalaiappa filed a suit O.S.No.1670 of 1971 for injunction restraining the plaintiff and defendants 1 and 2 from interfering with his alleged possession. He claimed to b