Genesis 15:8-10 Young's Literal Translation (YLT)
8 and he saith, `Lord Jehovah, whereby do I know that I possess it?'
9 And He saith unto him, `Take for Me a heifer of three years, and a she-goat of three years, and a ram of three years, and a turtle-dove, and a young bird;'
10 and he taketh to him all these, and separateth them in the midst, and putteth each piece over against its fellow, but the bird he hath not divided;
Genesis 15:8-10 New International Version (NIV)
8 But Abram said, “Sovereign Lord, how can I know that I will gain possession of it?”
9 So the Lord said to him, “Bring me a heifer, a goat and a ram, each three years old, along with a dove and a young pigeon.”
10 Abram brought all these to him, cut them in two and arranged the halves opposite each other; the birds, however, he did not cut in half.