When the king awoke and missed his scabbard, he was wroth, and he asked who had been there, and they said his sister, Queen Morgan had been there, and had put the scabbard under her mantle and was gone. Alas, said Arthur, falsely ye have watched me. Sir, said they all, we durst not disobey your sister’s commandment. Ah, said the king, let fetch the best horse may be found, and bid Sir Ontzlake arm him in all haste, and take another good horse and ride with me. So anon the king and Ontzlake were well armed, and rode after this lady, and so they came by a cross and found a cowherd, and they asked the poor man if there came any lady riding that way. Sir, said this poor man, right late came a lady riding with a forty horses, and to yonder forest she rode. Then they spurred their horses, and followed fast, and within a while Arthur had a sight of Morgan le Fay; then he chased as fast as he might. When she espied him following her, she rode a greater pace through the forest till she came to a plain, and when she saw she might not escape, she rode unto a lake thereby, and said, Whatsoever come of me, my brother shall not have this scabbard. And then she let throw the scabbard in the deepest of the water so it sank, for it was heavy of gold and precious stones.