Hector, stop!
You unforgivable, you … don’t talk to me of pacts.
There are no binding oaths between men and lions —
wolves and lambs can enjoy no meeting of the minds —
they are all bent on hating each other to the death.
So with you and me. No love between us. No truce
till one or the other falls and gluts with blood
Ares who hacks at men behind his rawhide shield.

[Ἕκτορ μή μοι ἄλαστε συνημοσύνας ἀγόρευε:
ὡς οὐκ ἔστι λέουσι καὶ ἀνδράσιν ὅρκια πιστά,
οὐδὲ λύκοι τε καὶ ἄρνες ὁμόφρονα θυμὸν ἔχουσιν,
ἀλλὰ κακὰ φρονέουσι διαμπερὲς ἀλλήλοισιν,
265ὣς οὐκ ἔστ᾽ ἐμὲ καὶ σὲ φιλήμεναι, οὐδέ τι νῶϊν
ὅρκια ἔσσονται, πρίν γ᾽ ἢ ἕτερόν γε πεσόντα
αἵματος ἆσαι Ἄρηα ταλαύρινον πολεμιστήν.]

Homer (fl. 7th-8th C. BC) Greek author
The Iliad, Book 22, l. 261ff [Achilles] (c. 750 BC) [tr. Fagles (1990), l. 308ff]
    (Source)

After Hector proposes a pact with Achilles that the winner of their battle will not abuse the corpse of his opponent. Original Greek. Alternate translations:

Hector, thou only pestilence in all mortality
To my sere spirits, never set the point ’twixt thee and me
Any conditions; but as far as men and lions fly
All terms of cov’nant, lambs and wolves; in so far opposite state,
Impossible for love t’ atone, stand we, till our souls satiate
The God of soldiers.
[tr. Chapman (1611), l. 224ff]

"Talk not of oaths," the dreadful chief replies,
While anger flashed from his disdainful eyes,
"Detested as thou art, and ought to be,
Nor oath nor pact Achilles plights with thee;
Such pacts, as lambs and rabid wolves combine,
Such leagues, as men and furious lions join,
To such I call the gods! one constant state
Of lasting rancour and eternal hate:
No thought but rage, and never-ceasing strife,
Till death extinguish rage, and thought, and life."
[tr. Pope (1715-20)]

Hector! my bitterest foe! speak not to me
Of covenants! as concord can be none
Lions and men between, nor wolves and lambs
Can be unanimous, but hate perforce
Each other by a law not to be changed,
So cannot amity subsist between
Thee and myself; nor league make I with thee
Or compact, till thy blood in battle shed
Or mine, shall gratify the fiery Mars.
[tr. Cowper (1791), l. 302ff]

Talk not to me of covenants, O most cursed Hector. As there are not faithful leagues between lions and men, nor yet have wolves and lambs an according mind, but ever meditate evils against each other; so it is not possible for thee and me to contract a friendship, nor shall there at all be leagues between us, -- first shall one, falling, satiate the invincible warrior Mars with his blood.
[tr. Buckley (1860)]

Hector, thou object of my deadly hate,
Talk not to me of compacts; as ’tween men
And lions no firm concord can exist,
Nor wolves and lambs in harmony unite,
But ceaseless enmity between them dwells:
So not in friendly terms, nor compact firm,
Can thou and I unite, till one of us
Glut with his blood the mail-clad warrior Mars.
[tr. Derby (1864)]

Hector, talk not to me, thou madman, of covenants. As between men and lions there is no pledge of faith, nor wolves and sheep can be of one mind, but imagine evil continually against each other, so is it impossible for thee and me to be friends, neither shall be any pledge between us until one or other shall have fallen and glutted with blood Ares, the stubborn god of war.
[tr. Leaf/Lang/Myers (1891)]

Fool, prate not to me about covenants. There can be no covenants between men and lions, wolves and lambs can never be of one mind, but hate each other out and out an through. Therefore there can be no understanding between you and me, nor may there be any covenants between us, till one or other shall fall and glut grim Mars with his life's blood.
[tr. Butler (1898)]

Hector, talk not to me, thou madman, of covenants. As between lions and men there are no oaths of faith, nor do wolves and lambs have hearts of concord but are evil-minded continually one against the other, even so is it not possible for thee and me to be friends, neither shall there be oaths between us till one or the other shall have fallen, and glutted with his blood Ares, the warrior with tough shield of hide.
[tr. Murray (1924)]