The burden of proving a particular fact is on the party who asserts it. See Okubule v. Oyagbola, (1990) 4 N.W.L.R. (Pt.147) 723; and Ike v. Ugboaja (1993) 6 N.W.L.R. (Pt.301) 539. That is the position in civil cases but the onus does not remain static. It shifts from side to side, where necessary, and the onus of adducing further evidence is on the person who will fail if such evidence was not adduced.
– Adio, JSC. UBN v. Ozigi (1994)