John Gill Commentary Genesis 31:51

"And Laban said to Jacob, Behold this heap, and behold the pillar, which I have set betwixt me and thee." — Genesis 31:51 (ASV)

And Laban said to Jacob Continued speaking to him, as follows: behold this heap, and behold [this] pillar which I have cast between me and you; the heap of stones seems to be gathered and laid together by the brethren, and the pillar to be erected by Jacob; and yet Laban says of them both, that he cast them, or erected them, they being done by his order, or with his consent, as well as Jacob's; unless the pillar can be thought to design another beside that which Jacob set up, and was like that, a single stone at some little distance from the heap: but the Samaritan and Arabic versions read, "which you have seen or set" agreeably to (Genesis 31:45) .