Definitions
nhamburirwa: something that is toiled/ suffered for.
riva: stone trap
Translation
The stomach is worked hard for, as even the mouse dies in a stone trap searching for food.
Application
Earning a living or satisfying basic needs requires effort and risk. The proverb acknowledges that people often face dangers, hardships, or sacrifices in pursuit of survival or success. Just like the mouse risking death in a trap for food, humans must be willing to endure challenges and persevere to meet their needs.