Bhagavad Gita · Karma YogaChapter 3, Shloka 2 (3.2)

Shankaracharya — the importance of "iva". yadyapi vivikta-abhidhāyī bhagavān, tathāpi mama manda-buddheḥ vyāmiśram iva bhagavad-vākyaṃ pratibhāti — the Lord speaks distinctly and clearly; still, to me, slow of understanding, his words seem mixed. You have come to remove the confusion of my understanding — how could you possibly confuse it? Hence "iva" — as it were.

Shankara's argument (against samuccaya, continued). Shankaracharya says: Arjuna asks for "one of the two" — knowledge or action. If Krishna had earlier said that both are to be practised together, why would Arjuna ask for "one"? This too goes against the samuccaya position.

Acharya Ramanuja — what seemed mixed. The means to the vision of the self is jnana-nishtha — which consists in the cessation of the activity of all the senses — and yet action, its very opposite, is called "the means" and he is told "do that" — this statement seems contradictory, mixed. Hence ekam amiśra-rūpaṃ vākyaṃ vada — speak one unmixed statement, so that I may settle what I must do and attain my highest good.