[docsaintly]

I think they meant: 窃钩者诛，窃国者侯 qiègōuzhě zhū, qièguózhě hóu He who steals a belt buckle pays with his life; he who steals a state gets to be a feudal lord.

Yes, it is a Chinese idiom.

[anthk]

The same in Spanish. Steal a hen, get a harsh sentence. Steal millions, you are now a respectable 'businessman'.

[atrocious]

The law locks up the man or woman Who steals the goose from off the common But leaves the greater villain loose Who steals the common from off the goose.

[Gibbon1]

Kill a man you're a murderer. Kill millions and you're a statesman.

[pezezin]

I am Spanish and I have never heard this proverb...