It is clear to me that a contract between parties may be discharged by breach of a fundamental term by any of the parties. There is no gain-saying the point that a breach of contract is committed when a party to the contract without lawful excuse fails, neglects or refuses to perform an obligation he undertook in the contract or incapacitates himself from performing same or in a way back down from carrying out a material term. See: Adeoti & Anr. v. Ayofinde & Anr. (2001) 6 NWLR (Pt.709) 336 … Where a party to a contract is in breach of a material term of same, the breach gives the aggrieved party a lee-way or an excuse for non-performance of its own side of the bargain. Such a party is at liberty to treat the contract as extinguished or at an end. See: Yadis (Nig.) Ltd. v. G.N.I.C. Ltd. (2007) 14 NWLR (Pt.1055) 584 at 609.
— Fabiyi, JSC. Best Ltd. v. Blackwood Hodge (2011) – SC