In line with the provisions of section 125(1) of the Property and conveyancing Law, a mortgagee shall not exercise his power of sale unless and until a notice requiring payment of the mortgage money has been served on the mortgagor or one of several mortgagors and default has been made in payment of the mortgaged money or of part thereof for three months after such service. See B.O.N. Ltd. v. Aliyu (1999) 7 NWLR (Pt. 612) 622, where this court held that “the requirement of the law is that notice of intention to sell a mortgage property must be sent to the mortgagor as the words “shall not” are mandatory and not advisory. Consequently, any sale of any mortgage without the requisite notice is invalid ab initio and cannot convey any title to a subsequent purchaser”.
– Augie JSC. Bank v. TEE (2003)