马无夜草不肥，人无外快不富 (馬無夜草不肥，人無外快不富) mǎ wú yè cǎo bù féi, rén wú wàikuài bù fù

mǎ wú yè cǎo bù féi, rén wú wàikuài bù fù phrase a horse cannot get fat without an extra ration, a man cannot get rich without an extra income
Domain: Proverb 谚语
Notes: (CC-CEDICT '馬無夜草不肥，人無外快不富')