my brother entered into a agreement to purchase aland for rs.70 lakhs paying 5 lakh as apart consideration and executed a registered agreement of sale with vendor in year oct 2005. in the sale agreement it was stipulated that the sale deed will be executed within one year after receiving remaining consideration. After expiry of one year the agreement will come to an end .the vendor did not receive the remaining consideration and execute the sale deed within a year on some or the other pretext. within the three years i.e.in the year 2008, my brother filed a suit for mandatory injuction to direct the vendor to execute the sale deed after receiving the remaining consideration. in year 2011, my brother made amend ment application to substitue the releif of specific performance of the contract for the releif of mandatory in juction. court allowed the amendment application . the vendor went in revision before the high court against the said amendment . Kindly advice the csae law supporting the said amend ment ordered by the trial court.
2-Kindly also advice the case law that agreement of sale will not come to to an end after expiry of one year in spite of stipulation in the agreement that it will come to an end after one year.