כֹּֽרֶה־שַּׁ֭חַת בָּ֣הּ יִפֹּ֑ל וְגֹ֥לֵ֥ל אֶ֝בֶן אֵלָ֥יו תָּשֽׁוּב׃
Whoso diggeth a pit shall fall therein; And he that rolleth a stone, it shall return upon him.
Read kabbalistic (mystical) interpretation of Proverbs 26:27: and classical mystical sources.