Then after a while it ceased raining and the clouds cleared away from the sky, and the sun shone forth once more with an extraordinary brilliancy. And anon there came that multitude of birds flying, as aforetold of in this history, and these, descending upon the tree by the fountain, straightway fell to singing with such a piercing rapture of melody that the hearts of those who listened were altogether ravished with the charm of their song.
Then, whilst those who were there stood listening to that singing of the birds, they perceived a great distance away the form of a knight who came riding toward that place with great speed. And that knight was clad altogether in black armor and he rode upon a great black horse, and all the trappings and the furniture of that horse were as black as all the other things that belonged to that knight. So that knight came violently riding to where they were, and perceiving that great court of knights and ladies who stood there all drenched and wet with the rain, he cried out in a proud and menacing voice, "Who are ye, and which of ye was it who meddled with this fountain?"
To this Sir Launcelot replied, "Sir, it was I."
Then the black knight, speaking very fiercely, said: "Know ye that ye have done a very woeful mischief, for, because you have meddled with this fountain, ye have brought a deluge upon this land that hath done great damage to all they that dwell therein. Now make you straightway ready for battle, for I have great hopes of punishing you for the mischief you have done to this land by thus meddling with the fountain."
Then Sir Launcelot answered, speaking both with great pride and with dignity of demeanor. "Messire," quoth he, "never yet have I refused any call to battle, nor shall I do so at this present. As for that mischief of which you speak, wit you that I knew not I was making any mischief in what I did. Ne'theless, now that that mischief is done, I am ready to defend mine act since you have called upon me to do so."
So saying, Sir Launcelot withdrew to one side in that meadow near to the fountain as aforetold of; and the Knight of the Fountain likewise withdrew himself to that same place, and when they had come there each chose such ground as seemed to him to be best fitted for the encounter. Meantime, all they who were there gathered in a good place whence they might onlook that encounter and behold the upshot of the adventure.
So when all was ready for the encounter, as aforesaid, each knight shouted aloud and drave spur to horse and each charged against the other with all the fury of two wild bulls.
Sir Launcelot doeth battle with the Knight of the Fountain.
So they met in the midst of the course with such a roar of encountering spears and armor that the ears of those who heard it were stunned with the noise thereof. In that encounter the spear of each knight was shattered to splinters up to the hand that held it, and the horse of each sunk back upon his haunches as though he had encountered a stone wall. But each knight recovered his horse with spur and voice and with wonderful skill and dexterity, so that neither horse nor man suffered a fall from that encounter.
Then each knight voided his horse and leaped to the earth and each straightway drew his shining sword, all flashing in the bright sunlight. And each rushed upon the other with a great rage for battle, smiting and slashing with their swords, and dealing such dreadful buffets that those who beheld that battle were affrighted at the vehemence with which those two champions fought. So they did combat for a great while and in all that time neither suffered any great harm from the buffets of the other. Then, at last, that knight who did battle against Sir Launcelot cried out, "Stay thy hand for a little, Sir Knight, while I hold speech with thee!"