Genesis 21:30

30 He replied, “Accept these seven lambs from my hand as a witness that I dug this well.”

Read Genesis 21:30 Using Other Translations

And he said, For these seven ewe lambs shalt thou take of my hand, that they may be a witness unto me, that I have digged this well.
He said, "These seven ewe lambs you will take from my hand, that this may be a witness for me that I dug this well."
Abraham replied, “Please accept these seven lambs to show your agreement that I dug this well.”