Mahabharata 6.38.24

तस्माच्छास्त्रं प्रमाणं ते कार्याकार्यव्यवस्थितौज्ञात्वा शास्त्रविधानोक्तं कर्म कर्तुमिहार्हसि

tasmācchāstraṃ pramāṇaṃ te kāryākāryavyavasthitaujñātvā śāstravidhānoktaṃ karma kartumihārhasi

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