עֵ֚ד הַגַּ֣ל הַזֶּ֔ה וְעֵדָ֖ה הַמַּצֵּבָ֑ה אִם־אָ֗נִי לֹֽא־אֶֽעֱבֹ֤ר אֵלֶ֙יךָ֙ אֶת־הַגַּ֣ל הַזֶּ֔ה וְאִם־אַ֠תָּה לֹא־תַעֲבֹ֨ר אֵלַ֜י אֶת־הַגַּ֥ל הַזֶּ֛ה וְאֶת־הַמַּצֵּבָ֥ה הַזֹּ֖את לְרָעָֽה׃
This heap be witness, and the pillar be witness, that I will not pass over this heap to thee, and that thou shalt not pass over this heap and this pillar unto me, for harm.
Read kabbalistic (mystical) interpretation of Genesis 31:52: and classical mystical sources.