Swamy Atmandanda v. Sri Ramakrishna, Tapovanam (2005) 10 SCC 51

The object and purport of the principle of res judicata as contended in Section 11 of the Code of Civil Procedure is to uphold the rule of conclusiveness of judgment, as to the points decided earlier of fact, or of law, or of fact and law, in every subsequent suit between the same parties.