Mahabharata — Ashvamedhika Parva, Shloka 23
Mind as Charioteer; Kṣetrajña, Tapas, and Dhyāna-Yoga
Adhyātma-Upadeśa
रथेन रथिनं पश्य क्लिश्यमानमचेतनम्
rathena rathinaṃ paśya kliśyamānam acetanam | yāvat rathasya gatiḥ panthāḥ tāvat rathena gacchati buddhimān | yatra rathasya mārgaḥ samāpyate tatra taṃ tyaktvā padbhyā yātrāṃ karoti ||
风神伐由说道：“看那愚人：纵使乘车而行，到了陡峭山前仍受困苦。智者乘车只到道路所容之处；车道既尽，便舍车而徒步前进。”其旨在于：善用方便与器具——不逾其分而执著，也不在有益时拒绝。
वायुदेव उवाच
Educational Q&A
Use tools and supports only within their proper limits. A wise person employs a means (like a chariot) where it works, and when it no longer serves the goal, he lets it go and proceeds by another suitable method—showing discernment rather than stubborn attachment.
Vāyudeva illustrates his counsel through a simple travel image: a fool suffers even while being conveyed by a chariot near difficult terrain, whereas a wise traveler adapts—riding while the road permits and walking when the road ends.