It is narrated from Hazrat Abu Huraira (may Allah be pleased with him) with reference to Ubayy bin Ka'b (may Allah be pleased with him) that the Holy Prophet (peace and blessings of Allah be upon him) said: Allah Almighty has not revealed any Surah like Surah Al-Fatiha in the entire Torah and Gospel. This is the Sab'a Mathani (the seven oft-repeated verses), and (Allah says) this Surah is divided between Me and My servant, and My servant will receive what he asks for.

It is narrated from Hazrat Abu Huraira (may Allah be pleased with him) with reference to Ubayy bin Ka'b (may Allah be pleased with him) that the Holy Prophet (peace and blessings be upon him) said: "Shall I not teach you a Surah the like of which is not found in the Torah, the Psalms, the Gospel, nor even in the Qur'an itself?" I said, "Why not?" The Holy Prophet (peace and blessings be upon him) said, "I hope that you will not leave through this door until you have learned it." Then the Holy Prophet (peace and blessings be upon him) stood up and I stood up with him. The Holy Prophet (peace and blessings be upon him) took my hand and began to talk to me, and as we walked, we reached near the door. I reminded the Holy Prophet (peace and blessings be upon him) and said, "O Messenger of Allah! Please tell me the Surah about which you spoke to me." The Holy Prophet (peace and blessings be upon him) said, "When you stand to pray, what do you recite?" He recited Surah Al-Fatiha. The Holy Prophet (peace and blessings be upon him) said, "That is the Surah. That is the Seven Oft-Repeated (verses), and that is the Great Qur'an which has been given to me."

The previous hadith is also narrated with slight variation in the order of the narrators.

Hazrat Rifa’ah narrates from his father that once I was present in the service of Hazrat Umar (may Allah be pleased with him). Someone said to him that Hazrat Zaid bin Thabit (may Allah be pleased with him) is sitting in the mosque and giving fatwa to people from his own opinion regarding the person who has intercourse with his wife but does not ejaculate. Hazrat Umar (may Allah be pleased with him) said,“Go quickly and bring him to me.”When he arrived, Hazrat Umar (may Allah be pleased with him) said to him,“O enemy of your own soul! I have heard that you are sitting in the Prophet’s Mosque and giving fatwa to people from your own opinion?”Hazrat Zaid (may Allah be pleased with him) replied,“I have not done so, rather this matter was mentioned to me by my uncles in reference to the Prophet Muhammad (peace and blessings be upon him).”Hazrat Umar (may Allah be pleased with him) asked,“Which uncle?”He replied,“Hazrat Ubayy bin Ka’b (may Allah be pleased with him), and Hazrat Abu Ayyub (may Allah be pleased with him), and Hazrat Rifa’ah bin Rafi’ (may Allah be pleased with him).”Hazrat Umar (may Allah be pleased with him) turned to me and said,“What is this young man saying?”I said,“We used to do the same in the time of the Prophet Muhammad (peace and blessings be upon him).”Hazrat Umar (may Allah be pleased with him) asked,“Did you people ask the Prophet Muhammad (peace and blessings be upon him) about this?”I replied,“We used to do the same in the blessed era of the Prophet Muhammad (peace and blessings be upon him) (it was common practice).”Hazrat Umar Farooq (may Allah be pleased with him) gathered all the people, and except for two persons, Hazrat Ali Murtaza (may Allah be pleased with him) and Mu’adh bin Jabal (may Allah be pleased with him), everyone agreed that ghusl (ritual bath) becomes obligatory only in the case of ejaculation. The aforementioned two said that when one private part meets the other private part, ghusl becomes obligatory. Then Hazrat Ali (may Allah be pleased with him) said,“Amir al-Mu’minin, the wives of the Prophet (peace and blessings be upon him) would have the most knowledge about this issue, so send someone to Hazrat Hafsa (may Allah be pleased with her) and find out.”Hazrat Hafsa (may Allah be pleased with her) replied,“I have no knowledge about this.”Then a messenger was sent to Hazrat Aisha (may Allah be pleased with her), and she said,“When one private part meets the other private part, ghusl becomes obligatory.”Upon this, Hazrat Umar Farooq (may Allah be pleased with him) became very angry and said,“If I find out that anyone has done this and not performed ghusl, I will give him a severe punishment.”

It is narrated from Hazrat Jabir bin Abdullah (may Allah be pleased with him) with reference to Ubayy bin Ka'b (may Allah be pleased with him) that a man came to the presence of the Prophet (peace and blessings be upon him) and said, "O Messenger of Allah (peace and blessings be upon him), tonight I have done something." The Prophet (peace and blessings be upon him) asked, "What is that?" He said, "The women who were with me at home said, 'You know how to recite the Qur'an, we do not, so you lead us in prayer.' So I led them in eight rak'ahs and witr." Upon this, the Prophet (peace and blessings be upon him) remained silent, and we understood that the silence of the Prophet (peace and blessings be upon him) was an indication of his approval of the mentioned incident.

It is narrated from Jabir bin Abdullah (may Allah be pleased with him) on the authority of Ubayy bin Ka'b (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) cauterized him.

It is narrated from Hazrat Sahl bin Sa’d (may Allah be pleased with him), who met the Noble Prophet (peace and blessings be upon him) and was fifteen years old during the blessed era of the Prophet (peace and blessings be upon him), on the authority of Ubayy bin Ka’b (may Allah be pleased with him), that the fatwa which people mention—that ghusl becomes obligatory upon ejaculation—was a concession that the Noble Prophet (peace and blessings be upon him) had given in the early days of Islam. Later, the Noble Prophet (peace and blessings be upon him) commanded us to perform ghusl.

It is narrated from Hazrat Sahl bin Sa’d (may Allah be pleased with him), who met the Noble Prophet (peace and blessings be upon him) and was fifteen years old during the blessed era of the Prophet (peace and blessings be upon him), on the authority of Ubayy bin Ka’b (may Allah be pleased with him), that the fatwa which people mention—that ghusl becomes obligatory upon ejaculation—was a concession that the Noble Prophet (peace and blessings be upon him) had given in the early days of Islam. Later, the Noble Prophet (peace and blessings be upon him) commanded us to perform ghusl.

The previous hadith is also narrated through this second chain of transmission.

Muhammad ibn Bakr narrated to us, Ibn Jurayj informed us, he said: Ibn Shihab said, Sahl ibn Sa'd said—and he had reached fifteen years of age when the Prophet, peace and blessings be upon him, passed away and had heard from him—Ubayy ibn Ka'b informed me, and he mentioned something similar.