Matthew 17:27

27.Throw a hook. Though I acknowledge that Christ had not always full coffers, yet I think that he was not compelled by poverty to give this order to Peter, but that he did so in order to prove by a miracle, that he had a more extensive dominion than all earthly kings, since he had even fishes for his tributaries. And we do not read that this was done more than once, because one proof was enough for his whole life. Thou wilt find a stater. A stater was of the same value as a shekel, namely, four drachms or two didrachma. (583)