Shloka 24
Nirmaryāda-saṃgrāma-varṇana — The Unbounded Clash and Bhīṣma’s Rallying Presence
तस्माच्छास्त्र प्रमाणं ते कार्याकार्यव्यवस्थितौ । ज्ञात्वा शास्त्रविधानोक्त कर्म कर्तुमिहाहसि
tasmāc chāstra-pramāṇaṁ te kāryākārya-vyavasthitau | jñātvā śāstra-vidhānoktaṁ karma kartum ihārhasi ||
因此，对你而言，判定何为当行、何为不当行的权威准则就是经论（śāstra）。既已知晓经文所命之行，当在此履行那被规定的本分——使抉择由达摩所引导，而非由冲动或私好所驱使。
अजुन उवाच
Educational Q&A
When deciding between duty and non-duty (kārya and akārya), one should treat śāstra as the decisive authority; having understood what the injunctions prescribe, one should act accordingly.
In the midst of the war-context discourse, the speaker instructs the listener to resolve moral uncertainty by appealing to śāstric guidance and then to carry out the prescribed action as dharma demands.