It is to be said loud and clear that a Court of law has no legal duty to confine itself only to authorities cited by parties. It can, in an effort to improve its Judgment rely on authorities not cited by parties. The Court is also under no duty to give notice to the parties that it intends to use a particular book or authority.
– M. Peter-Odili JSC. Adegbanke v. Ojelabi (2021)