Genesis 37:20-22

20And now come and let us kill him, and cast him into one of the pits, and we will say, An evil beast has devoured him; and we will see what becomes of his dreams.

21And Reuben heard [it], and delivered him out of their hand, and said, Let us not take his life.

22And Reuben said to them, Shed no blood: cast him into this pit which is in the wilderness; but lay no hand upon him — in order that he might deliver him out of their hand, to bring him to his father again.