Genesis 48:13-14

13And Joseph took both of them, Ephraim on his right toward Israel’s left hand and Manasseh on his left toward Israel’s right hand, and brought them close to him.

14But Israel reached out his right hand and put it on Ephraim’s head, though he was the younger, and crossing his arms, he put his left hand on Manasseh’s head, even though Manasseh was the firstborn.