Sayyiduna Ibn Mas'ud (may Allah be pleased with him) narrates: I used to herd the goats of 'Uqbah bin Abi Mu'ayt. One day, the Prophet (peace and blessings be upon him) passed by me along with Sayyiduna Abu Bakr (may Allah be pleased with him) and said: "O boy! Do you have any milk?" I replied: Yes, but I am entrusted with them. The Prophet (peace and blessings be upon him) said: "Is there any goat among them that a male has not mounted?" I brought such a goat to the Prophet (peace and blessings be upon him). The Prophet (peace and blessings be upon him) passed his hand over its udder, and milk descended into it. The Prophet (peace and blessings be upon him) milked it into a vessel, drank himself, and gave it to Sayyiduna Abu Bakr (may Allah be pleased with him) to drink as well. Then, addressing the udder, he said: "Shrink back," so the udder shrank back again. After a little while, I came to the service of the Prophet (peace and blessings be upon him) and said: O Messenger of Allah (peace and blessings be upon him)! Teach me this matter as well. The Prophet (peace and blessings be upon him) passed his hand over my head and prayed for me: "May Allah send His mercy upon you; you are an intelligent boy."

The previous hadith is also narrated through this second chain, however, in this version the words are that Sayyiduna Abu Bakr Siddiq (may Allah be pleased with him) brought to the Prophet (peace and blessings be upon him) a stone that was hollowed out from the inside, and milk was milked into it. The Prophet (peace and blessings be upon him) also drank from it, and Sayyiduna Abu Bakr (may Allah be pleased with him) and I also drank from it. After a short while, I came again and requested, "Teach me this Qur'an as well." The Prophet (peace and blessings be upon him) said, "You are an intelligent boy." Thus, I listened from the blessed mouth of the Prophet (peace and blessings be upon him) and memorized seventy surahs.

Sayyiduna Ibn Mas’ud (may Allah be pleased with him) narrates that Allah looked upon the hearts of His servants and found the heart of Muhammad (peace and blessings be upon him) to be the best among them, so Allah chose him for Himself and honored him with Prophethood and sent him forth. Then Allah took out the heart of Muhammad (peace and blessings be upon him) and again looked upon the hearts of His servants, and found the hearts of the companions of the Prophet (may Allah be pleased with them) to be the best, so Allah made them the ministers of His Prophet, who fight in the way of Allah for the preservation of His religion. Therefore, whatever the Muslims consider good is also good in the sight of Allah, and whatever the Muslims consider bad is also bad in the sight of Allah.

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: "It is possible that you may encounter such people who delay the prayer from its prescribed time. If you find them, then perform the prayer at its prescribed time in your home, and when they pray, join them as well, and consider it a voluntary prayer."

Sayyiduna Ibn Mas’ud (may Allah be pleased with him) narrates that once the Prophet (peace and blessings be upon him) led a prayer. I do not remember whether there was some deficiency or excess in it. In any case, when he finished with salam, someone asked:“O Messenger of Allah (peace and blessings be upon him)! Has a new command regarding the prayer been revealed?”The Prophet (peace and blessings be upon him) said:“No, what happened?”The companions (may Allah be pleased with them) said:“You led the prayer in such and such a manner.”Upon hearing this, the Prophet (peace and blessings be upon him) folded his legs and performed two prostrations of forgetfulness (sahw). Then, when he finished with salam, he said:“I am also a human being; just as you forget, I too can forget. So, if any of you ever has doubt in his prayer, he should carefully consider and act upon what he thinks is correct, and after finishing with salam, he should perform two prostrations of forgetfulness.”

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: "No one is permitted to talk after the 'Isha prayer except for two persons: one who is praying or one who is traveling."

It is narrated from Sayyiduna Ibn Mas'ud (may Allah be pleased with him) that once some people asked: O Messenger of Allah (peace and blessings be upon him)! Will we be held accountable for the deeds committed during the time of ignorance? The Prophet (peace and blessings be upon him) said: "When you accept Islam and adopt good deeds, then you will not be held accountable for the deeds of the time of ignorance, but if you continue to do evil deeds after accepting Islam, then you will be held accountable for both the former and the latter deeds."

It is narrated from Sayyiduna Ibn Mas'ud (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) disliked ten things: wearing a gold ring, dragging the lower garment on the ground, using yellow perfume, plucking white hair, removing semen from its place, performing ruqyah (incantation) with things other than the Mu'awwidhat, approaching one's wife during the days of breastfeeding and thereby harming the child's health, but he (peace and blessings be upon him) did not declare these things as forbidden. Also, hanging amulets, beautifying oneself for someone other than one's husband, and playing with dice were also disliked by the Prophet (peace and blessings be upon him).

It is narrated from Sayyiduna Ibn Mas'ud (may Allah be pleased with him) that one day I was present in the service of the Prophet (peace and blessings be upon him), and he said: "Recite the Qur'an to me." I said: O Messenger of Allah (peace and blessings be upon him)! Should I recite it to you while it has been revealed to you? He said: "Yes, but I like to hear it from someone other than myself." So I began to recite, and when I reached this verse: «‏‏‏‏﴿فَكَيْفَ إِذَا جِئْنَا مِنْ كُلِّ أُمَّةٍ بِشَهِيدٍ وَجِئْنَا بِكَ عَلَى هَؤُلَاءِ شَهِيدًا﴾ [النساء: 41] » "How will it be when We bring from every nation a witness, and We bring you as a witness over them all," I saw that the eyes of the Prophet (peace and blessings be upon him) were flowing with tears.

Shaqiq bin Salamah says that once a man from Banu Bajilah—whose name was Nahik bin Sinan—came to the service of Sayyiduna Ibn Mas’ud (may Allah be pleased with him) and said: O Abu Abdur Rahman! How do you recite this verse: «﴿مِنْ مَاءٍ غَيْرِ آسِنٍ﴾ [محمد: 15] » — with a ya or with an alif? Sayyiduna Ibn Mas’ud (may Allah be pleased with him) said: Have you memorized the entire Qur’an except for this verse? He replied: (You can estimate from this) I recite the Mufassalat in one rak’ah. Sayyiduna Ibn Mas’ud (may Allah be pleased with him) said: Like poetry? Whereas bowing and prostration are also the beauty of prayer. Many people recite the Noble Qur’an in such a way that it does not go below their throats, but if a person recites the Noble Qur’an in such a way that it becomes firmly established in his heart, then it is beneficial. I also know examples where the Prophet (peace and blessings be upon him) recited two surahs in one rak’ah. After saying this, Sayyiduna Ibn Mas’ud (may Allah be pleased with him) stood up and went inside. After a short while, Alqamah came and was about to go inside as well, so we said to him: Please ask Sayyiduna Ibn Mas’ud (may Allah be pleased with him) about those examples according to which the Prophet (peace and blessings be upon him) used to recite two surahs in one rak’ah. So he went inside and asked him this question, and after coming out he said: According to the mushaf compiled by Sayyiduna Ibn Mas’ud (may Allah be pleased with him), the first twenty surahs of the Mufassalat are meant.