Targum zu Bereschit 31:19

And Laban had gone to shear his flock; and Rahel stole the images. For they had slain a man, a firstborn, and had cut off his head; they salted it with salt and balsams, and wrote incantations on a plate of gold, and put it under his tongue, and set it up in the wall, and it spake with them; and unto such their father bowed himself.