Numbers 16:15

16:15 Moses was very angry, and he said to the Lord, “Have no respect for their offering! I have not taken so much as one donkey from them, nor have I harmed any one of them!”

Numbers 35:30

35:30 “Whoever kills any person, the murderer must be put to death by the testimony of witnesses; but one witness cannot testify against any person to cause him to be put to death.