GYAMERAH v. BREFO Fraud—Fraudulent conveyances—Deed of assignment—Plaintiff authorising K.N. to collect rents and deal generally with disputed house—K.N. in charge of house for six years—Defendant obtaining deed of assignment from K.N.—K.N. impersonating deceased owner of house to execute deed of assignment—Defendant contending plaintiff aiding K.N. in perpetration of fraud—Finding by trial judge that plaintiff not blameable for fraud and could not anticipate fraud—Rule that where two innocent persons have to suffer for fraud of third party he who has enabled such person to occasion loss to sustain it—Circumstances in which rule applicable—Whether proof of mere carelessness sustaining the rule.