Genesis 37:20-22

20“Come now, let us kill him and throw him into one of the pits. We can say that a vicious animal has devoured him. Then we shall see what becomes of his dreams!”

21When Reuben heard this, he tried to rescue Joseph from their hands. “Let us not take his life,” he said. 22“Do not shed his blood. Throw him into this pit in the wilderness, but do not lay a hand on him.” Reuben said this so that he could rescue Joseph from their hands and return him to his father.