It is narrated from a Companion, who says: One day, the Messenger of Allah (peace and blessings be upon him) addressed us and then said: O people! There are two things; whoever Allah protects from their evil will enter Paradise. Upon hearing this, an Ansari man stood up and said: O Messenger of Allah! Will you not tell us what those two things are? The Prophet (peace and blessings be upon him) again said: There are two things; whoever Allah protects from their evil will enter Paradise. Then the same man repeated the same thing. When the Prophet (peace and blessings be upon him) said this for the third time, the Companions made that man sit down and said to him: Do you not see that the Messenger of Allah (peace and blessings be upon him) wants to give us glad tidings, but you are stopping him? He said: I fear that people will rely on this and abandon further deeds. Finally, the Prophet (peace and blessings be upon him) said: There are two things; whoever Allah protects from their evil will enter Paradise: one is that which is between the two jaws, and the other is that which is between the two legs.

Syedna Abu Saeed Khudri (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said: When the son of Adam wakes up in the morning, all his limbs humble themselves before the tongue and say: Fear Allah regarding us, for if you are upright, we will also be upright, and if you become crooked, we will also become crooked.

It is narrated from Sayyiduna Husayn (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: The beauty of a servant’s Islam is that he leaves what does not concern him.

It is narrated from Sayyiduna Sufyan bin Abdullah Thaqafi (may Allah be pleased with him), he says: I said, "O Messenger of Allah! Tell me about such a deed related to Islam that I may hold fast to it and after you, I may not need to ask anyone about it." The Prophet (peace and blessings be upon him) said: "Say, 'My Lord is Allah,' and then remain steadfast upon it." I said, "O Messenger of Allah! What do you fear most for me?" In another narration: "From what should I guard myself?" The Prophet (peace and blessings be upon him) held his blessed tongue and said: "This."

It is narrated from Sayyiduna Abdullah bin Amr (may Allah be pleased with them both) that a man said: O Messenger of Allah! Which Islam is the best? The Prophet (peace and blessings be upon him) said: That person from whose tongue and hand other Muslims are safe.

It is narrated from Sayyiduna Bara’ bin ‘Azib (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) informed a Bedouin about various types of good deeds, among which were these: And you should enjoin good and forbid evil, but if you do not have the strength to do so, then restrain your tongue except for words of goodness.

It is narrated from Sayyiduna Mu’adh bin Jabal (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said to him: Shall I not tell you what is the foundation of the religion, its pillar, and its highest peak? I said: O Messenger of Allah! Certainly. He (peace and blessings be upon him) said: The foundation of the religion and its pillar is prayer, and its highest peak is jihad. Then he (peace and blessings be upon him) said: Shall I not also tell you about that thing which controls all of these? I said: Yes, O Prophet of Allah! In response, he (peace and blessings be upon him) held his blessed tongue and said: Restrain this over yourself. I said: O Messenger of Allah! Will we also be held accountable for what we say? He (peace and blessings be upon him) said: O Mu’adh! May your mother lose you, nothing throws people on their faces into the Fire except the harvest of their tongues.

It is narrated from Sayyiduna Abdullah bin Masood (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "By Him in Whose hand is my soul! A servant does not become a Muslim until his heart and tongue become ones of peace."

It is narrated from Sayyiduna Sahl bin Sa’d (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him and his family) said: Whoever guarantees for me what is between his jaws and what is between his legs, I will guarantee Paradise for him.

Sayyiduna Muhammad bin Abdur Rahman Tufawi (may Allah be pleased with him) says: Sayyiduna Abu Ghadiyah, Sayyiduna Habib bin Harith, and Sayyidah Umm Abi Al-Aliyah migrated to the Messenger of Allah (peace and blessings be upon him) and accepted Islam. This woman said: O Messenger of Allah! Advise me with something. The Prophet (peace and blessings be upon him) said: Avoid that which is unpleasant to the ears.