Daniel 1:8-16
But Daniel purposed in his heart that he would not defile himself with the portion of the king's meat, nor with the wine which he drank: therefore he requested of the prince of the eunuchs that he might not defile himself.
Nave's Topical Index—AKJV

1 Corinthians 9:27
But I keep under my body, and bring it into subjection: lest that by any means, when I have preached to others, I myself should be a castaway.
Nave's Topical Index—AKJV