Matthew 17:27
27 But we do not want to make these men who take the tax angry. So go to the lake and throw out a hook on a string to catch fish. Pull up the first fish that you catch on your hook. Open the mouth of the fish and you will find a coin inside it. Take the coin and give it to those who receive taxes for the temple. This will be enough money for both my tax and yours.’
17:26Jesus is telling Peter that he and the other disciples belong to God's kingdom. So they should not need to pay the tax for God's temple.