Arjuna says that "I'll not fight. I'll not fight with my relatives and brothers for the sake of achieving some kingdom. No, no, no." Now, for the ordinary man it appears to be: "Oh, Arjuna is very nice man, nonviolent. He's giving up everything for the sake of his relatives. Oh, what a nice man he is." This is ordinary calculation. But what Krsna says? "You are fool, damn fool number one." You see? And that we have already discussed. Asocyan anvasocas tvam prajna-vadams ca bhasase: [Bg. 2.11] "My dear Arjuna, you are talking like very learned man, but you are number fool one." Yes. This is the, I mean to say, reward given. "You are, you are declining to fight? This is your nonsensical." Now, just see. The things which are estimated in the public eyes very nice, very good, that is condemned by God. Condemned by God. We have got so many examples and experiences life that what is eulogized by some of our friends, it is condemned by others. So whole thing, our perfection of any act, that should be certified by the Supreme Lord. Dharmah svanusthitah pumsam… [SB 1.2.8]. Svanusthitasya dharmasya samsiddhir hari-tosanam [SB 1.2.13]. Hari-tosanam. We have to see it, "Whether the Supreme Consciousness is pleased with my, this action." So Arjuna's action was not approved, not approved by Lord Krsna. But the same Arjuna, he fought at the last. After hearing the instruction of Bhagavad-gita, he engaged himself in the fight.
>>> Ref. VedaBase => Bhagavad-gita 2.55-58 — New York, April 15, 1966