This parable appears in the New Testament books of Mark and Luke.
"As Jesus looked up, he saw the rich putting their gifts into the temple treasury. He also saw a poor widow put in her two mites. "Truly I tell you," he said, "this poor widow has put in more than all the others. All these people gave their gifts out of their wealth; but she out of her poverty put in all she had to live on." (Luke 21:1-4)