Mahabharata 12.199.5

यथा ह्येकरसा भूमिरोषध्यात्मानुसारिणीतथा कर्मानुगा बुद्धिरन्तरात्मानुदर्शिनी

yathā hyekarasā bhūmiroṣadhyātmānusāriṇītathā karmānugā buddhirantarātmānudarśinī

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