Genesis 37:18-21

And when they saw him from a distance, even before he came close to them, they plotted to kill him. They said to one another, “Look, here comes this dreamer. Now then, come and let us kill him and throw him into one of the pits (cisterns, underground water storage); then we will say [to our father], ‘A wild animal killed and devoured him’; and we shall see what will become of his dreams!” Now Reuben [the eldest] heard this and rescued him from their hands and said, “Let us not take his life.”