Al-Bukhari...

Al-Bukhari, in his Sahih, part 1, page 19, and Muslim, in his Sahih, part 1, page 66, recorded that Talhah Ibn Ubaydullah reported that a Bedouin had the following dialogue with the Messenger: The Bedouin: What is Islam? The Messenger: Five daily prayers. The Bedouin: Do I have to add to them any prayer? The Messenger: No, unless you volunteer. And fast in the month of Ramadhan. The Bedouin: Do I have to add to it any other fast? The Messenger: No, unless you volunteer.

Then he mentioned to him the prescribed charity. The Bedouin: Do I have to add to it? The Messenger: No, unless you volunteer. The Bedouin: By God, I shall not add to these; nor shall I subtract from them. The Messenger: The Bedouin has succeeded if he is true.

Muslim, in his Sahih, recorded that Abu Hurayrah reported that a Bedouin said to the Prophet: "Advise me of a deed that if I accomplish, I will be admitted to Paradise." The Messenger said: "Worship God, ascribe no partner to Him, offer the prescribed prayer, give the prescribed charity, and fast the month of Ramadan." The Bedouin said: "By God, in Whose hand is my soul, I shall not add to these, nor shall I subtract from them." When he turned his back, the Messenger said: "Whoever desires to look at a man from the people of Paradise, should look at this man." Muslim also recorded that Abadah Ibn Al-Samit, while he was on his deathbed, said to the people around him: "I have reported to you all the beneficial Hadiths I heard from the Messenger except one.

I shall report it to you while my soul is being taken by God. I heard the Messenger of God say: "Whoever testifies that there is no God but the Almighty, and that Muhammad is Messenger of God, God shall protect him from Hell." Muslim also recorded that 'Ubadah Ibn Al-Samit reported that the Messenger of God said: "Whoever says: I bear witness that there is no God but the Almighty, alone without partner; that Muhammad is His servant and Messenger; that Jesus is His servant and Messenger and the Son of His maid, and word, which He (Allah) had given to Mary and a spirit from Him, that Paradise is a reality and Hell is a reality, God shall admit him into Paradise through any of its eight gates He chooses.