Matthew 16:10-12 World English Bible (WEB)
10 Nor the seven loaves for the four thousand, and how many baskets you took up? 11 How is it that you don’t perceive that I didn’t speak to you concerning bread? But beware of the yeast of the Pharisees and Sadducees.”
12 Then they understood that he didn’t tell them to beware of the yeast of bread, but of the teaching of the Pharisees and Sadducees.