Proverbs 3:30 Midrash

אַל־תרוב [תָּרִ֣יב] עִם־אָדָ֣ם חִנָּ֑ם אִם־לֹ֖א גְמָלְךָ֣ רָעָֽה׃

Strive not with a man without cause, If he have done thee no harm.

Read midrashic interpretation of Proverbs 3:30: and classical rabbinic exegesis.