It is narrated from Sayyiduna Abu Sa'id Khudri, may Allah be pleased with him, that the Messenger of Allah, peace and blessings be upon him, said: "Whoever says: I am pleased with Allah as my Lord, with Islam as my religion, and with Muhammad (peace and blessings be upon him) as my Messenger, then Paradise will become obligatory for him."

Sayyiduna Salman al-Farsi (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said: «اللَّهُمَّ إِنِّي أُشْهِدُكَ وَأُشْهِدُ مَلَائِكَتَكَ وَحَمَلَةَ عَرْشِكَ، وَأُشْهِدُ مَنْ فِي السَّمَاوَاتِ وَمَنْ فِي الْأَرْضِ، أَنَّكَ أَنْتَ اللَّهُ لَا إِلَهَ إِلَّا أَنْتَ وَحْدَكَ لَا شَرِيكَ لَكَ، وَأَشْهَدُ أَنَّ مُحَمَّدًا عَبْدُكَ وَرَسُولُكَ» “Whoever recites this supplication: O Allah! I make You a witness, I make Your angels and (especially) the bearers of the Throne witnesses, and I make all things in the heavens and the earth witnesses that You are God, You alone are the true God, You are One, You have no partner, and I bear witness that Muhammad (peace and blessings be upon him) is Your servant and Messenger. Whoever recites this supplication once, Allah Almighty will free one third of his being from the Fire; whoever recites it twice, Allah Almighty will free two thirds of his being from the Fire; and whoever recites it three times, Allah Almighty will free his entire being from the Fire.”

The Messenger of Allah (peace and blessings be upon him) said: "Whoever recites this supplication three times: 'I seek forgiveness from Allah, besides whom there is no deity worthy of worship, He is the Ever-Living, the Sustainer, and I turn to Him in repentance,' his sins will be forgiven, even if he has committed the major sin of fleeing from the battlefield." This hadith is narrated from Sayyiduna Abdullah bin Mas'ud, the freed slave of the Messenger Sayyiduna Zaid, Sayyiduna Abu Bakr as-Siddiq, Sayyiduna Abu Hurairah, Sayyiduna Abu Sa'id al-Khudri, Sayyiduna Anas bin Malik, and Sayyiduna Bara bin Azib (may Allah be pleased with them).

It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: "O Allah! I seek refuge with You from an evil neighbor in my permanent residence, for the neighbor of a tent-dweller keeps moving (here and there)."

It is narrated from Sayyiduna Abdullah bin Mas’ud (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) used to recite this supplication:“O Allah! Protect me with Islam while I am standing, and protect me with Islam while I am sitting, and protect me with Islam while I am sleeping. Do not let my enemy who envies me rejoice over my suffering. O Allah! I ask You for every good whose treasures are in Your hand, and I seek refuge in You from every evil whose treasures are with You.”

Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) narrates that the Messenger of Allah (peace and blessings be upon him) used to supplicate with these words: "O Allah! I seek refuge in You from being overcome by debt, from being overpowered by enemies, and from the enemies rejoicing over my misfortune."

Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) also used to supplicate: "O Allah! Forgive me, that is, my former and latter (sins), and (also forgive those sins) which I have committed secretly and openly, and (those sins) which You know better than I do. Surely, You are the One Who brings forward and the One Who puts back, and there is no deity worthy of worship except You."

Shahr bin Hawshab says that I asked Sayyida Umm Salamah (may Allah be pleased with her): O Mother of the Believers! When the Messenger of Allah (peace and blessings be upon him) was with you, which supplication did he recite most frequently? She said: He (peace and blessings be upon him) used to recite this supplication most often: "O Turner of the hearts! Keep my heart firm upon Your religion." When he (peace and blessings be upon him) was asked about the reason for this supplication, he said: "The heart of every person is between two fingers from among the fingers of Allah, He keeps firm whomever He wills (upon guidance) and lets go astray whomever He wills."

Sayyiduna Anas (may Allah be pleased with him) says: A Bedouin came to the Noble Prophet (peace and blessings be upon him) and said: O Messenger of Allah! Teach me something of the best. The Noble Prophet (peace and blessings be upon him) took his hand and said:“Say like this: Allah is Pure, all praise is for Allah, there is no deity worthy of worship except Allah, Allah is the Greatest.”The Bedouin counted these four things on his fingers and left, but after thinking, he came back. The Noble Prophet (peace and blessings be upon him) smiled and said,“The poor Bedouin has started thinking.”He came back and said: O Messenger of Allah! Allah is Pure, all praise is for Allah, Allah alone is worthy of worship, and Allah is the Greatest. All these (praising) words are for Allah, what is there for me? The Noble Prophet (peace and blessings be upon him) said to him:“Bedouin! When you say «سبحان الله» ‏‏‏‏, Allah, the Exalted, will say: «صدقت» (You have spoken the truth). When you say «الحمد لله» , Allah, the Exalted, will say: «صدقت» . When you say «لا اله الا الله» , Allah, the Exalted, will say: «صدقت» . When you say «‏‏‏‏اللہ اکبر» , Allah, the Exalted, will say: «صدقت» . And when you say «اللهم اغفرلى» ‘O Allah! Forgive me,’ Allah, the Exalted, will say: I have forgiven you. When you say «اللهم ارحمنى» ‘O Allah! Have mercy on me,’ Allah, the Exalted, will say: I have had mercy on you. And when you say «اللهم ارزقني» ‘O Allah! Provide for me,’ Allah, the Exalted, will say: I have decided to provide for you.”The Bedouin counted these seven words on his hand and left.

Abu Malik Ashja'i narrates from his father Sayyiduna Tariq bin Ashyam (may Allah be pleased with him) that a man came to the Prophet Muhammad (peace and blessings be upon him) and said: O Messenger of Allah! When I ask my Lord, what should I say? The Prophet (peace and blessings be upon him) said: "Say like this: O Allah! Forgive me, have mercy on me, grant me well-being, and provide for me." Then the Prophet (peace and blessings be upon him) closed his fingers except for the thumb. (And said:) "These words will gather for you your world and your Hereafter."