马无夜草不肥，人无外快不富

ma3 wu2 ye4 cao3 bu4 fei2 , ren2 wu2 wai4 kuai4 bu4 fu4

a horse cannot get fat without an extra ration, a man cannot get rich without an extra income (idiom)

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馬無夜草不肥，人無外快不富|马无夜草不肥，人无外快不富 [mǎ wú yè cǎo bù féi , rén wú wài kuài bù fù] ► a horse cannot get fat without an extra ration, a man cannot get rich without an extra income (idiom)