daivāsurasampadvibhāgayoga - Verse śloka 24
śloka 24
tasmācchāstraṃ pramāṇaṃ te kāryākāryavyavasthitau |
jñātvā śāstravidhānoktaṃ karma kartumihārhasi ||16-24||
Translation
Therefore, for you the scripture alone is the authority in determining duty and non-duty; knowing the injunctions laid down in the scripture, you should perform your actions.