An option clause in a tenancy agreement is a covenant which runs with the land and binds the successors of both the lessor and the lessee in possession. It is immaterial that the lease is not registered provided the lessee has entered into possession and paid the rent pursuant to the agreement, he acquired a legal tenancy. Both parties in such a case are bound by the terms of the agreement and the parties are treated as having the same rights and as being subject to the same liabilities as if a valid lease had been granted. See Manchester Brewery Co. v. Coombs (1901) 2 Ch. 608, p.613.
— Coker, JSC. Okoye v Dumez & Ors. (1985) – SC.89/1984