As the parties are adversaries, each one is bound by his case as framed in his pleadings. That being so, the Defendant/Appellant will not be allowed to set up (at the hearing as he did) an entirely different case without any prior amendment to his pleadings: African Continental Seaways Ltd. v. Nigerian Dredging Roads General Works Ltd. (1977) 5 S.C. 235 at p.249.
— Oputa, JSC. Salawu Ajide V. Kadiri Kelani (SC.76/1984, 29 Nov 1985)