Mahabharata 12.286.40

धर्मशास्त्राणि वेदाश्च षडङ्गानि नराधिपश्रेयसोऽर्थे विधीयन्ते नरस्याक्लिष्टकर्मणः

dharmaśāstrāṇi vedāśca ṣaḍaṅgāni narādhipaśreyaso'rthe vidhīyante narasyākliṣṭakarmaṇaḥ

Our plain-language meaning of this verse is waiting for scholar review.