As regards sins regarding unclean food and the like, and improper speeches, etc., they are of two classes, viz., those committed knowingly and those that committed unconsciously.
भक्ष्याभक्ष्येषु चान्येषु वाच्यावाच्ये तथैव च। अज्ञानज्ञानयो राजन् विहितान्यनुजानतः॥