Definitions
mwena: a burrow or hole in the ground.
rindira: to watch over, wait for, or keep vigil.
ishwa: edible flying termites that emerge seasonally and are a delicacy.
Translation
The burrow that is watched over is the one from which flying termites emerge.
Application
The proverb teaches that people do not wait or gather without reason. They focus their time and effort where they expect to gain something they value. Attention, patience, and presence are guided by expectation.