Mahabharata 12.87.19

बाह्यमाभ्यन्तरं चैव पौरजानपदं जनम्चारैः सुविदितं कृत्वा ततः कर्म प्रयोजयेत्

bāhyamābhyantaraṃ caiva paurajānapadaṃ janamcāraiḥ suviditaṃ kṛtvā tataḥ karma prayojayet

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