In Book XXIII of the Iliad, after Patroclos' body has been burnt, Achillês tells the Greeks to put out the pyre with wine:
Now the people were all gathering round Agamemnon. They made such noise and uproar that Achillês sat up and said:
"Atreidês, and you other princes, you must first quench the pyre with wine wherever the flames have touched. Then let us gather the bones of Patroclos Menoitidês, and be careful to find the right ones. [...]"
They did his bidding at once. First they quenched the pyre with wine wherever it had burnt and the ashes were deep; then weeping they gathered the bones of their gentle companion, and laid them covered with fat in a golden urn, which they wrapt up in fine linen and put away safely in the hut.
(translation by W.H.D. Rouse, 1938)
Why was it necessary to put it out using wine? What's the significance of quenching the pyre with wine instead of water?