Bhagavad Gita · Jnana Karma Sannyasa YogaChapter 4, Shloka 15 (4.15)

"Evaṃ jñātvā" — action with this knowledge. Knowledge does not stop action; it changes how action is seen.

Shankaracharya: kuru tena karmaiva tvam, na tūṣṇīm āsanaṃ nāpi saṃnyāsaḥ kartavyaḥ — therefore you must act; sitting idle or renunciation is not your duty. Yadi anātmajñaḥ tvaṃ tadā ātma-śuddhy-artham, tattvavic cet loka-saṅgrahārtham — if you are not a knower of the self, then for self-purification; and if you are a knower of truth, then for the welfare of the world. Pūrvaiḥ janakādibhiḥ (by the ancients, Janaka and others).

Acharya Ramanuja: evaṃ māṃ jñātvā api vimukta-pāpaiḥ pūrvaiḥ api mumukṣubhiḥ uktalakṣaṇaṃ karma kṛtam — even the seekers of liberation of old, freed from sin, knowing me thus, performed action of the kind described; so you too — mad-viṣaya-jñāna-vidhūta-pāpaḥ — washing away your sins through knowledge of me — do the very action pūrvaiḥ vivasvan-manvādibhiḥ kṛtam — that Vivasvan, Manu and the others performed. And as a lead-in to the next verse: vakṣyamāṇasya karmaṇo durjñānatām āha — he tells of the difficulty of understanding (the nature of) the action about to be described.