Genesis 15:10
"And he took unto him all these, and divided them in the midst, and laid each piece one against another: but the birds divided he not."
Cross References (ranked by relevance)
Leviticus 1:17
And he shall cleave it with the wings thereof, but shall not divide it asunder: and the priest shall burn it upon the altar, upon the wood that is upon the fire: it is a burnt sacrifice, an offering made by fire, of a sweet savour unto the LORD.
Genesis 15:17
And it came to pass, that, when the sun went down, and it was dark, behold a smoking furnace, and a burning lamp that passed between those pieces.