Flavius Josephus, Antiquities of the Jews
William Whiston, A.M., Ed.

[322] But then, as to the sacred images, he bid him search for them; and when Laban accepted of the offer, Rachel, being informed of it, put those images into that camel's saddle on which she rode, and sat upon it; and said, that her natural purgation hindered her rising up: so Laban left off searching any further, not supposing that his daughter in such circumstances would approach to those images. So he made a league with Jacob, and bound it by oaths, that he would not bear him any malice on account of what had happened; and Jacob made the like league, and promised to love Laban's daughters. And these leagues they confirmed with oaths also, which the made upon certain as whereon they erected a pillar, in the form of an altar: whence that hill is called Gilead; and from thence they call that land the Land of Gilead at this day. Now when they had feasted, after the making of the league, Laban returned home.