Bhagavad Gītā Chapter 4, Verse 15: Krishna to Arjuna — Jñāna-Karma-Sannyāsa-Yoga
Knowing that the Self is not the doer and action leaves no stain, the ancient seekers of liberation performed their duties. Do the same, Arjuna, just as those before them did even longer ago.
Bhāṣyakāra purports
- Śaṅkaraadvaita
Knowing thus — that ātman is the non-doer and karma (action) leaves no stain on it — the ancient seekers of liberation (mumukṣu) performed their prescribed duties. Therefore act, Arjuna: not silence, not renunciation. If you lack self-knowledge, act to purify the mind (ātma-śuddhi); if you possess it, act for the cohesion of the world (loka-saṃgraha), as Janaka and the ancients did long before this age.
divergence: Śaṅkara explicitly bifurcates the mandate: anātmajña acts for ātma-śuddhi; tattvavit acts for loka-saṃgraha. Both must still act — silence (tūṣṇīmāsana) and formal renunciation (saṃnyāsa) are ruled out for Arjuna here.
- Rāmānujaviśiṣṭādvaita
Those ancients — Vivasvān, Manu, and their lineage — whose sins were washed away by the very knowledge of Bhagavān just described, nevertheless performed this very karma in the manner He would now elaborate. Purified by that God-directed knowledge (mad-viṣaya-jñāna), you too must perform karma in the same ancient, Bhagavān-sanctioned form — not a modern improvisation.
divergence: Rāmānuja emphasizes vimuktapāpa (liberated from sin) and mad-viṣaya-jñāna-vidhūtapāpa — the knowledge of Bhagavān Himself purifies and then qualifies the agent. The lineage (Vivasvān→Manu→Ikṣvāku) frames karma as divinely authorized succession.
- Madhvadvaita
Knowing thus — that prescribed action performed with this understanding constitutes right conduct (ācāra) — the ancients acted. The teaching here is that even prior to this present moment (pūrvatara: what came before) such karma was the established practice. Act accordingly.
divergence: Madhva's commentary is deliberately terse: he treats the verse as confirming that action-with-knowledge has scriptural precedent (ācāra) and that pūrvatara means simply 'what predated even those ancients.' The laconic style is characteristic — dvaita's polemical energy enters elsewhere.
- Vallabhaśuddhādvaita
Having stated the incidental teaching, Kṛṣṇa now recalls Arjuna to the karma elaborated earlier: knowing — in the manner of a yogī (yogibhāvata), as Bhagavān Himself acts — that karma done thus does not bind, the ancient seekers, whether Kakṣīvat and Nārada, or Manu and his line, or Janaka and his, performed svadharma (one's own duty) in the way that will now be further explained. Therefore you too must perform karma alone. And this is no innovation: it is the most ancient practice, done by those who came long before.
divergence: Vallabha names three distinct lineages of precedent (Kakṣīvat/Nārada, Manu-ādi, Janaka-ādi) and introduces the key phrase yogibhāvata — acting in the mode of a yogī, as Kṛṣṇa Himself acts in His līlā. The verse is a resumption of the main karma-yoga thread after a digression.
- Śrīdharabhakti
After the four-verse digression addressing the apparent partiality of Īśvara, Kṛṣṇa resumes the karma-yoga teaching. Knowing that karma performed without ahaṃkāra (ego-sense) does not bind, even the ancient seekers of liberation — Janaka and others — performed it in prior yugas for the purification of sattva (sattva-śuddhi). Therefore, first perform karma — begin there.
divergence: Śrīdhara explicitly names the textual function of this verse: it is an anusmāraṇa (reminder) resuming the main thread after 4.11–4.14. He anchors the non-binding character of action in ahaṃkāra-rāhitya (freedom from ego-identification) and specifies the goal as sattva-śuddhi.
- Madhusūdanaadvaita-bhakti
Because ātman is not the doer and the Self has no desire for the fruits of action — knowing from this jñāna that karma cannot bind the ātman — even those ancient seekers of liberation of this yuga, Yayāti, Yadu, and their peers, performed karma. Therefore you too must act, not sit in silence, not renounce. Whether you lack the knowledge, act for ātma-śuddhi; if you possess it, act for loka-saṃgraha, as Janaka-ādi did — and not merely in this yuga: the ancients of prior yugas did the same. Past and further-past alike confirm: this karma is your unavoidable obligation.
divergence: Madhusūdana fuses Śaṅkara's ātma-śuddhi / loka-saṃgraha bifurcation with a devotional roll-call spanning two temporal layers (asmin yuge: Yayāti/Yadu; yuge-yuga-āntare: Janaka-ādi of prior cycles). The double temporal sweep is unique to his reading.