Krishna presses further. People will speak of your disgrace for ages, he says. And for a person of your standing, dishonor is a fate worse than death itself. These are hard words — but they come from a place of deep caring, not cruelty.
A person's name carries weight. For a warrior of Arjuna's stature — the winner of Draupadi's svayamvara, the conqueror of kingdoms, the student of Drona — his reputation is not vanity. It is the visible record of a life lived with courage. To let that record be overwritten by a single act of retreat would undo everything he has stood for.
Krishna is holding up a mirror. He is saying: look at what you have built over a lifetime. One moment of hesitation, and the world will remember only that — the moment you turned away. The word 'avyayam' — undying — is striking. Bodies perish. Disgrace does not.