בְּ֭נִי אִם־עָרַ֣בְתָּ לְרֵעֶ֑ךָ תָּקַ֖עְתָּ לַזָּ֣ר כַּפֶּֽיךָ׃
HIJO mío, si salieres fiador por tu amigo, Si tocaste tu mano por el extraño,
Rashi on Proverbs
My son, if you have stood surety Our Sages explained this as referring to surety in monetary matters, according to its apparent meaning.