tasmāt–Therefore; śāstram–the scriptural injunctions; kāryākārya-vyavasthitau–concerning duty and non-duty; te pramāṇam–are your authority. jñātvā–Knowing; śāstra-vidhāna-uktam–scripturally enjoined; karma–duty; iha–in this world of action; (tvam) arhasi–you ought;

(tat) kartum–to act accordingly. [24]

Therefore, the scriptural injunctions for duty and non-duty are your authority. Knowing your duty in this world according to the scriptures (to act only for the Lord’s pleasure), you should act accordingly.