Daniel 1:7-8

Then the commander of the officials assigned new names to them; and to Daniel he assigned the name Belteshazzar, to Hananiah Shadrach, to Mishael Meshach and to Azariah Abed-nego. But Daniel made up his mind that he would not defile himself with the king’s choice food or with the wine which he drank; so he sought permission from the commander of the officials that he might not defile himself.