Specific Relief Act. 1963 Ss. 12(3) and 14
S.12 (3) permits a party to an agreement to relinquish a part of the agreement which is not enforceable - However, it should be possible to indetify and demarcate that part of the agreement which is not to be enforced.
Shanker Singh v/s Narinder Singh and ors
Supreme Court
Civil Appeal No. 3249 of 2005
Decided on 15.12.2011