וַיֹּ֥אמֶר לָבָ֖ן לְיַעֲקֹ֑ב הִנֵּ֣ה ׀ הַגַּ֣ל הַזֶּ֗ה וְהִנֵּה֙ הַמַצֵּבָ֔ה אֲשֶׁ֥ר יָרִ֖יתִי בֵּינִ֥י וּבֵינֶֽךָ׃
And Laban said to Jacob: ‘Behold this heap, and behold the pillar, which I have set up betwixt me and thee.
Read halakhic rulings (Jewish law) on Genesis 31:51: and classical halakhic sources.