1 Samuel 15:13-15

When Samuel reached him, Saul said, “The LORD bless you! I have carried out the LORD’s instructions.” But Samuel said, “What then is this bleating of sheep in my ears? What is this lowing of cattle that I hear?” Saul answered, “The soldiers brought them from the Amalekites; they spared the best of the sheep and cattle to sacrifice to the LORD your God, but we totally destroyed the rest.”