Plutarch Eumenes 17

[1] After the battle was over, Teutamus at once sent an embassy to treat for the baggage. And when Antigonus promised not only to give this back to the Silver-shields but also to treat them kindly in other ways, provided they would deliver up Eumenes to him, the Silver-shields formed a dire design to put the man alive into the hands of his enemies.

[2] So, to begin with, they drew near him, without awakening his suspicions, and kept him in ward, some making complaints about their baggage, others bidding him to be of good courage, since he was victorious, and others still denouncing the other commanders. Then they fell upon him, snatched his sword away from him, and tied his hands fast with his girdle. And when Nicanor had been sent by Antigonus to receive him and he was being led along through the Macedonians, he begged for leave to speak to them, not with a view to supplication or entreaty, but in order to set forth what was for their advantage.

[3]
  Silence was made, and standing on an eminence he stretched forth his hands, bound as they were, and said: What trophy, O ye basest of Macedonians, could Antigonus have so much desired to set up over your defeat, as this which ye yourselves are now erecting by delivering up your general as a prisoner? It is not a dreadful thing, then, that in the hour of your victory ye should acknowledge yourselves defeated for the sake of your baggage, implying that victory lies in your possessions and not in your arms, but ye must also send your leader as a ransom for that baggage.

[4] As for me, then, ye lead me away undefeated, a victor over my enemies, a victim of my fellow-soldiers; but as for you, by Zeus the god of armies and by the gods who hallow oaths, I bid you slay me here with your own hands. Even should I be slain yonder, it will be wholly your work. Nor will Antigonus find any fault; for he wants a dead and not a living Eumenes. And if ye would spare your own hands, one of mine, if released, will suffice to do the business.

[5] And if ye cannot trust me with a sword, cast me under the feet of your elephants, all bound as I am. If ye do this, I will absolve you from your guilt towards me, holding that ye have shown yourselves most just and righteous in your dealings with your own general.