Does forgetfulness occur among the Prophets, or are they protected from it?

Question:
Honorable Shaykh, may Allah grant you success. This questioner says: Does forgetfulness occur among the Prophets (peace and blessings be upon them), or are they protected from this matter?

Answer:
Forgetfulness occurs in both. The Prophet (peace and blessings be upon him) forgot in prayer; he forgot in prayer and said the closing salam before completing the prayer by mistake. He stood up and sat down in another place, so Dhu al-Yadayn (may Allah be pleased with him) came to him and said: O Messenger of Allah, did the prayer become short, or did you forget? He said: I did not forget, and the prayer did not become short. He said: No, you forgot. So the Prophet (peace and blessings be upon him) turned to his Companions and said: Is Dhu al-Yadayn telling the truth? They said: Yes. So he (peace and blessings be upon him) stood up and completed his prayer and prostrated for forgetfulness.