From a long line of cases, it is clearly evident that it is the policy of this Court not to interfere with the concurrent findings of the two courts below. This policy is predicated on, and presupposes that, the court of first instance evaluated the evidence, exercised its right to believe or disbelieve witnesses, and then finally arrived at specific findings on the issues of fact arising from the pleadings and evidence as presented to the court for resolution. When that had been done and the Court of Appeal confirms the findings of the trial court, then an appellant is confronted with a rather uphill task. There again, such an appellant will be required to show either that the findings were perverse thus leading to an obvious miscarriage of justice or that there was a violation of some principle of law or procedure.
– Oputa JSC. OLUFOSOYE v. OLORUNFEMI (1989)