When Sir Tristram heard him say so he gat his spear in his hand, and either abashed down their heads, and came together as thunder; and Sir Tristram’s spear brake in pieces, and Sir Launcelot by malfortune struck Sir Tristram on the side a deep wound nigh to the death; but yet Sir Tristram avoided not his saddle, and so the spear brake. Therewithal Sir Tristram that was wounded gat out his sword, and he rushed to Sir Launcelot, and gave him three great strokes upon the helm that the fire sprang thereout, and Sir Launcelot abashed his head lowly toward his saddle-bow. And therewithal Sir Tristram departed from the field, for he felt him so wounded that he weened he should have died; and Sir Dinadan espied him and followed him into the forest.

Malory's Le Morte d'Arthur