It is narrated from Sayyiduna Abu Hurairah, may Allah be pleased with him, that Jibreel (peace be upon him) used to present the Noble Qur’an to the Noble Prophet, peace and blessings be upon him, every year. But in the year in which the Prophet, peace and blessings be upon him, passed away, he presented it twice.

Narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) that Sayyiduna Umar (may Allah be pleased with him) said: Sayyiduna Ali (may Allah be pleased with him) is the most knowledgeable among us in matters of judgment and justice, and Sayyiduna Ubayy (may Allah be pleased with him) is the most knowledgeable among us in recitation, but we leave out several verses from his recitation (because they have been abrogated). He says: I have heard these verses from the Messenger of Allah (peace and blessings be upon him), so I will not leave them for anything, while Allah Almighty has said: {مَا نَنْسَخْ مِنْ آیَۃٍ أَ وْ نُنْسِہَا نَأْتِ بِخَیْرٍ مِنْہَا أَ وْ مِثْلِہَا} … Whatever verse We abrogate or cause to be forgotten, We bring one better than it or similar to it.

(Second chain) Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) says: Sayyiduna Umar (may Allah be pleased with him) addressed us while he was seated on the pulpit of the Prophet, and he said: Sayyiduna Ali (may Allah be pleased with him) is the most knowledgeable among us in matters of judgment and justice, and Sayyiduna Ubayy (may Allah be pleased with him) is the most knowledgeable among us in recitation, but we leave out some of the verses recited by Sayyiduna Ubayy (may Allah be pleased with him). Indeed, Sayyiduna Ubayy (may Allah be pleased with him) heard these verses from the Noble Prophet (peace and blessings be upon him), and he says that whatever he has heard from the Noble Prophet (peace and blessings be upon him), he will not leave it, even though after Sayyiduna Ubayy bin Ka'b (may Allah be pleased with him), some parts of the Noble Qur'an continued to be revealed (due to which some of the previously revealed parts were abrogated).

It is narrated from Sayyiduna Ubayy ibn Ka'b (may Allah be pleased with him), he says: The Noble Prophet (peace and blessings be upon him) led us in the Fajr prayer and while reciting, he left out a verse. When I arrived, I had missed a part of the prayer. In any case, when the Prophet (peace and blessings be upon him) finished, I said: O Messenger of Allah! Has such-and-such verse been abrogated or did you forget it? The Prophet (peace and blessings be upon him) replied: No, rather I forgot it.