In the morn came Merlin and let write Balin’s name on the tomb with letters of gold, that Here lieth Balin le Savage that was the Knight with the Two Swords, and he that smote the Dolorous Stroke. Also Merlin let make there a bed, that there should never man lie therein but he went out of his wit, yet Launcelot de Lake fordid that bed through his noblesse. And anon after Balin was dead, Merlin took his sword, and took off the pommel and set on another pommel. So Merlin bade a knight that stood afore him handle that sword, and he assayed, and he might not handle it. Then Merlin laughed. Why laugh ye? said the knight. This is the cause, said Merlin: there shall never man handle this sword but the best knight of the world, and that shall be Sir Launcelot or else Galahad his son, and Launcelot with this sword shall slay the man that in the world he loved best, that shall be Sir Gawaine. All this he let write in the pommel of the sword.

Le Morte D'Arthur