It is usually difficult to out rightly determine whether a ground of a law is purely one of law alone or is of mixed law and fact. Where a counsel is confronted with such difficulty, the safest thing for him to do, is to apply for leave on the ground or grounds of mixed law and facts.
— P.A. Galinje JSC. Stanbic IBTC Bank Plc V. Longterm Global Capital Limited & Anor. (SC.535/2013(R), 23 June 2017)