Therefore, let scripture be your authority in determining what should be done and what should not be done. Having understood the injunctions of scripture, you should act accordingly here.

The chapter closes with a clear, practical instruction: let śāstra (scripture, the body of received wisdom) be your pramāṇa — your authority, your standard of proof — in determining what to do and what not to do. Kārya-akārya — what is to be done and what is not to be done — is the fundamental ethical question that the demonic person cannot answer (as established in verse 7) because they have no reliable standard. The divine person answers it by reference to something beyond their own desires: the accumulated testimony of those who have walked the path. This is not blind obedience but the humility of the learner who recognises that the tradition has more to offer than the untrained ego. The final word is arhasi — you are worthy, you ought, it is fitting for you. A note of dignity: not command but invitation.