Saint George by chance arrived at the spot. The princess tried to send him away, but he vowed to remain. The dragon emerged from the pond while they were conversing. Saint George made the Sign of the Cross and charged it on horseback, seriously wounding it with his lance.[a] He then called to the princess to throw him her girdle (zona), and he put it around the dragon’s neck. When she did so, the dragon followed the girl like a “meek beast” on a leash.[b]
Source: Saint George and the Dragon – Wikipedia
Tim B.
“George then killed the dragon, beheading it with his sword, and the body was carted out of the city on four ox-carts. The king built a church to the Blessed Virgin Mary and Saint George on the site where the dragon died and a spring flowed from its altar with water that cured all disease.[15] Only the Latin version involves the saint striking the dragon with the spear, before killing it with the sword.[16]”