A person who seeks to bind another with a document must prove (a) that it was read over and interpreted to him in a language he understands, and (b), that he understood the nature of the document before he signed it.
BANK OF WEST AFRICA LTD. v. APPENTENG AND ANOTHER [1972] 1 GLR 153 [1971] SLR (CA) 30 · Court of Appeal · 1971 · SIRIBOE JSC
Read it in the judgment