Genesis 25:33

And Jacob said, Swear to me this day; and he sware unto him: and he sold his birthright unto Jacob.
— Genesis 25:33, King James Version

In other translations

World English Bible (WEB)

Jacob said, "Swear to me first." He swore to him. He sold his birthright to Jacob.

American Standard Version (ASV)

And Jacob said, Swear to me first; and he sware unto him: and he sold his birthright unto Jacob.

Young's Literal Translation (YLT)

and Jacob saith, 'Swear to me to-day:' and he sweareth to him, and selleth his birthright to Jacob;