Iliad (Rapsodies 7 to 12)   

upon a great reward, but the horses of the descendant of Aeacus are
hardly to be kept in hand or driven by any other mortal man than
Achilles himself, whose mother was an immortal. But tell me, and
tell me true, where did you leave Hector when you started? Where
lies his armour and his horses? How, too, are the watches and
sleeping-ground of the Trojans ordered? What are their plans? Will
they stay here by the ships and away from the city, or now that they
have worsted the Achaeans, will they retire within their walls?"
And Dolon answered, "I will tell you truly all. Hector and the other
councillors are now holding conference by the monument of great
Ilus, away from the general tumult; as for the guards about which
you ask me, there is no chosen watch to keep guard over the host.
The Trojans have their watchfires, for they are bound to have them;
they, therefore, are awake and keep each other to their duty as
sentinels; but the allies who have come from other places are asleep
and leave it to the Trojans to keep guard, for their wives and
children are not here."
Ulysses then said, "Now tell me; are they sleeping among the
Trojan troops, or do they lie apart? Explain this that I may
understand it."
"I will tell you truly all," replied Dolon. "To the seaward lie
the Carians, the Paeonian bowmen, the Leleges, the Cauconians, and the
noble Pelasgi. The Lysians and proud Mysians, with the Phrygians and
Meonians, have their place on the side towards Thymbra; but why ask
about an this? If you want to find your way into the host of the
Trojans, there are the Thracians, who have lately come here and lie
apart from the others at the far end of the camp; and they have Rhesus
son of Eioneus for their king. His horses are the finest and strongest
that I have ever seen, they are whiter than snow and fleeter than
any wind that blows. His chariot is bedight with silver and gold,
and he has brought his marvellous golden armour, of the rarest
workmanship- too splendid for any mortal man to carry, and meet only
for the gods. Now, therefore, take me to the ships or bind me securely
here, until you come back and have proved my words whether they be
false or true."
Diomed looked sternly at him and answered, "Think not, Dolon, for
all the good information you have given us, that you shall escape
now you are in our hands, for if we ransom you or let you go, you will
come some second time to the ships of the Achaeans either as a spy
or as an open enemy, but if I kill you and an end of you, you will
give no more trouble."
On this Dolon would have caught him by the beard to beseech him
further, but Diomed struck him in the middle of his neck with his
sword and cut through both sinews so that his head fell rolling in the
dust while he was yet speaking. They took the ferret-skin cap from his
head, and also the wolf-skin, the bow, and his long spear. Ulysses
hung them up aloft in honour of Minerva the goddess of plunder, and
prayed saying, "Accept these, goddess, for we give them to you in
preference to all the gods in Olympus: therefore speed us still
further towards the horses and sleeping-ground of the Thracians."
With these words he took the spoils and set them upon a tamarisk
tree, and they marked the place by pulling up reeds and gathering
boughs of tamarisk that they might not miss it as they came back
through the' flying hours of darkness. The two then went onwards
amid the fallen armour and the blood, and came presently to the
company of Thracian soldiers, who were sleeping, tired out with
their day's toil; their goodly armour was lying on the ground beside
them all orderly in three rows, and each man had his yoke of horses
beside him. Rhesus was sleeping in the middle, and hard by him his
horses were made fast to the topmost rim of his chariot. Ulysses
from some way off saw him and said, "This, Diomed, is the man, and
these are the horses about which Dolon whom we killed told us. Do your
very utmost; dally not about your armour, but loose the horses at
once- or else kill the men yourself, while I see to the horses."