What should I do with the money I received from the motorcyclist who hit my motorcycle, especially since I did not use it to repair it, and I cannot return it to him because he is an infidel?

If the tire's utility has not been lost and the defect is not significant, its owner may take his tire along with the value of what was diminished from it due to the impact. However, if both parties agree on a sum for the transgression, then the paid amount becomes the property of the tire's owner.