אַל־תְּבַהֵ֥ל בְּרֽוּחֲךָ֖ לִכְע֑וֹס כִּ֣י כַ֔עַס בְּחֵ֥יק כְּסִילִ֖ים יָנֽוּחַ׃
Be not hasty in thy spirit to be angry; For anger resteth in the bosom of fools.
Find Mishnaic references to Ecclesiastes 7:9: , passages from the 63 tractates of the Mishnah.