"It is provided in section 50 that a "holder" in relation to a right of occupancy, means a person entitled to a right of occupancy and includes any person to whom a right of occupancy has been validly assigned or has validly passed on the death of a holder but does not include any person to whom a right of occupancy has been sold or transferred without a valid assignment, nor a mortgagee, sub-lessee or sub-under lessee" Per NNAEMEKA-AGU, J.S.C. (P.152, paras. B-D) GARUBA ABIOYE & ORS. V. SA'ADU YAKUBU & ORS(1991) LPELR-43(SC)