Analyzing the Limitations of Locus Standi in CPC

Yaar, this one was a doozy from 2018 JJS paper - Q. 16. A decree was passed in favour of A against B. Subsequently, B sells his property to C, who then files an application to set aside the decree on the grounds that the decree was obtained by B through fraud. Can C be a necessary party in the application to set aside the decree? Explain.

Now, the correct approach here is to first see if C is a necessary party or not. If she's a necessary party, then you need to go through the procedure to bring her on record. But if she's not a necessary party, then you don't need to do that. The key is to analyze the relationship between the properties sold by B to C and the decree passed against B in favour of A.