The Odyssey 8.256–270

They levelled a place for the dance, and marked out a fair wide ring, and the herald came near, bearing the clear-toned lyre for Demodocus. He then moved into the midst, and around him stood boys in the first bloom of youth, well skilled in the dance, and they smote the goodly dancing floor with their feet. And Odysseus gazed at the twinklings of their feet and marvelled in spirit. But the minstrel struck the chords in prelude to his sweet lay and sang of the love of Ares and Aphrodite of the fair crown, how first they lay together in the house of Hephaestus secretly; and Ares gave her many gifts, and shamed the bed of the lord Hephaestus. But straightway one came to him with tidings, even Helius, who had marked them as they lay together in love. And when Hephaestus heard the grievous tale, he went his way to his smithy, pondering evil in the deep of his heart, and set on the anvil block the great anvil and forged bonds