The Iliad 24.144–158

and bear tidings within Ilios unto great-hearted Priam that he go to the ships of the Achaeans to ransom his dear son, and that he bear gifts unto Achilles which shall make glad his heart; alone let him go, neither let any man beside of the Trojans go with him. A herald may attend him, an elder man, to guide the mules and the light-running waggon, and to carry back to the city the dead, even him that Achilles slew. Let not death be in his thoughts. neither any fear; such a guide will we give him, even Argeiphontes, who shall lead him, until in his leading he bring him nigh to Achilles. And when he shall have led him into the hut, neither shall Achilles himself slay him nor suffer any other to slay; for not without wisdom is he, neither without purpose, nor yet hardened in sin; nay, with all kindliness will he spare a suppliant man.