[Third: Those who are ignorant :] The third man is he who heard the Prophet ordering to do a thing and later the Prophet refrained the people from doing it, but this man did not know it, or he heard the Prophet refraining people from a thing and later he allowed it, but this man did not know it. In this way he retained in his mind what had been repealed, and did not retain the repealing tradition. If he knew that it had been repealed he would reject it, or if the Muslims knew, when they heard it from him, that it had been repealed they would reject it.