It is narrated from Sayyiduna Ibn Mas'ud (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Abusing a Muslim is wickedness and fighting him is disbelief." The narrator says: I asked Abu Wa'il twice: Did you hear this directly from Sayyiduna Ibn Mas'ud (may Allah be pleased with him)? He replied: Yes!

It is narrated from Sayyiduna Ibn Mas'ud (may Allah be pleased with him) that once I presented myself in the court of the Messenger, and the Prophet (peace and blessings be upon him) had a severe fever. I touched him and asked: O Messenger of Allah (peace and blessings be upon him)! Do you also have such a severe fever? He said: "Yes! I have a fever equal to that of two men among you." I said: Then will you also receive double the reward? He said: "Yes! By the One in Whose hand is my soul, there is no Muslim on the face of the earth who is afflicted with any hardship—whether it is illness or something else—and Allah does not, because of it, shed his sins just as a tree sheds its leaves."

Aswad says that once, at noon, I was present with Alqamah in the company of Sayyiduna Ibn Mas'ud (may Allah be pleased with him). The prayer was established, so both of us stood behind him. Sayyiduna Ibn Mas'ud (may Allah be pleased with him) took hold of me with one hand and my companion with the other hand and pulled us forward until each of us was at a corner, and he himself stood between us. Then he said that when there were three people, the Prophet (peace and blessings be upon him) would do the same. Then, after leading us in prayer, he said: Soon there will come rulers who will delay the prayer from its appointed time. Do not wait for them, and join them with the intention of nafl (supererogatory) prayer.

Sayyiduna Ibn Mas'ud (may Allah be pleased with him) narrates that the Prophet (peace and blessings of Allah be upon him) said: "I am also a human being; just as you forget, I too can forget. And if any of you ever becomes doubtful in his prayer, then he should carefully consider and act upon what he thinks is most correct, and after saying the salam, he should perform two prostrations of forgetfulness (sujood as-sahw)."

Abdur Rahman bin Yazid says that once on the day of Ashura, Ash'ath bin Qais came to Sayyiduna Ibn Mas'ud (may Allah be pleased with him), who was eating at that time. He said: O Abu Muhammad! Come forward to eat. Ash'ath said: Is today not the day of Ashura? Sayyiduna Ibn Mas'ud (may Allah be pleased with him) replied: Do you even know what the day of Ashura is? Before the command of fasting in Ramadan was revealed, the Prophet (peace and blessings be upon him) used to fast on this day. When the command of fasting in Ramadan was revealed, this fast was abandoned.

It is narrated from Sayyiduna Ibn Mas'ud (may Allah be pleased with him) that I also know such examples that the Prophet (peace and blessings of Allah be upon him) recited two surahs in one rak'ah.

Sayyiduna Ibn Mas'ud (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said: "I will wait for you at the Hawd (Pond) of Kawthar. At that time, there will be a dispute before me regarding some people and I will be overpowered. I will say: 'O Lord! My companions?' It will be said: 'You do not know what innovations they introduced after you.'"

It is narrated from Sayyiduna Ibn Mas'ud (may Allah be pleased with him) that when Surah Nasr was revealed to the Prophet (peace and blessings be upon him), he began to say frequently: " «سُبْحَانَكَ اللّٰهُمَّ وَبِحَمْدِكَ اللّٰهُمَّ اغْفِرْ لِي إِنَّكَ أَنْتَ التَّوَّابُ» " "Glory is to You, O our Lord! And all praise is for You. O Allah! Forgive me, for surely You are the Acceptor of repentance, the Most Merciful."

It is narrated from Sayyiduna Ibn Mas'ud (may Allah be pleased with him) that on the night of the jinn, the Prophet (peace and blessings be upon him) drew a line around him. A man from among the jinn would come like several date-palm trees. The Prophet (peace and blessings be upon him) said to me, "Do not move from your place." The Prophet (peace and blessings be upon him) taught them the Noble Qur'an. When Sayyiduna Ibn Mas'ud (may Allah be pleased with him) saw the Jats, he said that they were people like them. On that occasion, the Prophet (peace and blessings be upon him) also asked me, "Do you have water?" I replied, "No." He said, "Do you have nabidh?" I replied, "Yes!" So the Prophet (peace and blessings be upon him) performed ablution with that.

It is narrated from Sayyiduna Ibn Mas'ud (may Allah be pleased with him) that the Prophet (peace and blessings of Allah be upon him) said: "If I were to take a close friend (khalil) from among my Ummah, I would have taken Abu Bakr (may Allah be pleased with him)."