Contradiction with Mark 6:5
In this verse, it is stated that Jesus could do no mighty work except for healing a few sick individuals, suggesting limitations that contradict the immediate healing power demonstrated in Matthew 8:3.
Mark 6:5: And he could there do no mighty work, save that he laid his hands upon a few sick folk, and healed [them].
Contradiction with Matthew 13:58
This verse mentions that Jesus did not do many mighty works in his own country due to unbelief, which contrasts with the straightforward healing in Matthew 8:3 without any indication of the leper's faith.
Matthew 13:58: And he did not many mighty works there because of their unbelief.
Contradiction with John 5:13-14
Here, Jesus heals a man but then warns him afterward, implying a condition, whereas Matthew 8:3 shows an unconditional healing.
John 5:13-14: And he that was healed wist not who it was: for Jesus had conveyed himself away, a multitude being in [that] place. [a multitude...: or, from the multitude that was]