תּלמוד אויף תהילים 41:10

A certain man used to say: “A man upon whom I relied lifted up his fists and arose [against me].” Samuel said to Rav Yehuda: This is a written verse. “Even my friend whom I trusted, [who ate my bread, has lifted up his heel against me.]” (Psalms 41:10)

which did eat of my bread, hath lifted up his heel against me.