Song and Legend from the Middle Ages
Chapter 6
So as they stood speaking, in came a squire, and said unto the king, Sir, I bring unto you marvellous tidings. What be they? said the king. Sir, there is here beneath at the river a great stone, which I saw fleet above the water, and therein saw I sticking a sword. The king said, I will see that marvel. So all the knights went with him, and when they came unto the river, they found there a stone fleeting, as it were of red marble, and therein stack a fair and a rich sword, and in the pomell thereof were precious stones, wrought with subtil letters of gold. Then the barons read the letters, which said in this wise: Never shall man take me hence but only he by whose side I ought to hang, and he shall be the best knight of the world. When the king had seen these letters, he said unto Sir Launcelot, Fair sir, this sword ought to be yours, for I am sure ye be the best knight of the world. Then Sir Launcelot answered full soberly: Certes, sir, it is not my sword: also, sir, wit ye well I have no hardiness to set my hand to, for it longed not to hang by my side. Also who that assayeth to take that sword, and falleth of it, he shall receive a wound by that sword, that he shall not be whole long after. And I will that ye wit that this same day will the adventures of the Sancgreal, that is called the holy vessel, begin.
Sir Gawaine tries to draw out the sword but fails. They sit at table and an old man brings in the young knight, Sir Galahad.