Chapter 16 · Divine and Demonic Natures · Krishna said
Bhagavad Gita 16.24 — Scripture as guide
तस्माच्छास्त्रं प्रमाणं ते कार्याकार्यव्यवस्थितौ। ज्ञात्वा शास्त्रविधानोक्तं कर्म कर्तुमिहार्हसि ॥
tasmācchāstraṃ pramāṇaṃ te kāryākāryavyavasthitau | jñātvā śāstravidhānoktaṃ karma kartumihārhasi ||
Meaning
So let scripture be your guide in deciding what to do and what not to do. Knowing what it teaches, do your work in this world.