It is settled law that evidence given in a previous case cannot be accepted as evidence in a subsequent proceedings except in conditions where the provisions of section 34(1) of the Evidence Act applies. Even where a witness who testified in a previous proceeding testifies again in a subsequent proceeding, the previous evidence has no greater value than its use in cross-examination of the witness as to his credit. Romaine v. Romaine (1972) 4 NWLR (Part 238) 650 at 669; Ayinde v. Salawu (1989) 3 NWLR (Part 109) 297 at 315; Alade v. Aborishade (1960) 5 FSC 167; Irenye v. Opune (1985) 2 NWLR (Part 5) 1 at 6-8 Sanyaolu v. Coker (1983) 1 SCNLR 168.
— F.F. Tabai JSC. Tijani Dada v Jacob Bankole (2008) – S.C. 40/2003