וְאִם־בְּפֶ֥תַע בְּלֹא־אֵיבָ֖ה הֲדָפ֑וֹ אוֹ־הִשְׁלִ֥יךְ עָלָ֛יו כָּל־כְּלִ֖י בְּלֹ֥א צְדִיָּֽה׃
But if he thrust him suddenly without enmity, or hurled upon him any thing without lying in wait,
Read kabbalistic (mystical) interpretation of Numbers 35:22: and classical mystical sources.