Does a person sin if he forgets what he has memorized from the Book of Allah?

Question : He says: Does a person sin if he forgets the memorization of the Book of Allah, if he is a memorizer of it or of several parts of it? Please inform us.

Answer : The answer is that he does not sin unless he abandons it out of negligence and disdain for it; in that case, he sins because of the intention that accompanied it. Otherwise, the Messenger (peace and blessings be upon him) sometimes forgot some verses. Did you understand?