Vers 2.52.12.22.32.42.52.62.72.82.92.102.112.122.132.142.152.162.172.182.192.202.212.222.232.242.252.262.272.282.292.302.312.322.332.342.352.362.372.382.392.402.412.422.432.442.452.462.472.482.492.502.512.522.532.542.552.562.572.582.592.602.612.622.632.642.652.662.672.682.692.702.712.72

Better it is, indeed, in this world to accept alms than to slay the most noble teachers. But if I kill them, even in this world all my enjoyments of wealth and fulfilled desires will be stained with (their) blood.

Better to live in this world even on alms than to kill these great-souled teachers. If I kill them, though they seek their own gain, every pleasure I enjoy here will be stained with blood.

Arjuna argues that a beggar's life would be better than one bought by killing his great-souled teachers. Begging for food was the way of renunciants, not of a warrior prince, so he is offering to give up his whole station in life. He admits that his elders have sided with the Kauravas out of interest in wealth, yet even so he sees any enjoyment won through their deaths as soaked in blood. The verse shows how deeply his moral imagination is engaged: he pictures the victory itself and finds it unbearable.