"Chukua pesa yako"

Translation: Take your money

[giraffe__]

they call it 'nairobbery' for a reason

[Jurekkolas]

There is a phrase 'chukua mabaki' (keep the change) - is 'keep' wrong?

[iongantas]

For some reason this word isn't making sense to me. I'm not sure what the infinitive is.