Kuvaraidza nguva kuteya nzou neriva.

Word definitions

riva: trap with a falling flat stone for catching small animals

Translation

Trying to capture an elephant with a stone trap is merely whiling away the hours.

Inspiration

An elephant is too big to be caught with a small trap used for small animals.

Application

It isĀ  a waste of time to engage in an endeavor that is clearly hopeless.