אָדָ֣ם חֲסַר־לֵ֭ב תּוֹקֵ֣עַ כָּ֑ף עֹרֵ֥ב עֲ֝רֻבָּ֗ה לִפְנֵ֥י רֵעֵֽהוּ׃
A man void of understanding is he that striketh hands, And becometh surety in the presence of his neighbour.
Find Talmudic references to Proverbs 17:18: , passages from the Talmud Bavli and Yerushalmi.