God will not take you to task for what you may rattle off in your oaths, but He does take you to task for anything you have sworn to solemnly [and then ignored]. Exoneration for it means feeding ten paupers with the average of what you would feed your own families, or clothing them, or freeing a captive. Whoever does not find the wherewithal [to do so], should fast for three days. This is what penance involves in order to free yourselves from any oath you have sworn [loosely]. Keep your word; thus God explains His signs to you, so you may act grateful.