Narrated from Sayyiduna Anas bin Malik (may Allah be pleased with him) that the Noble Prophet (peace and blessings of Allah be upon him) was not one who would speak abusively, utter obscenities, or curse others. When angry with any of us, he would say: "What is the matter with him? May his forehead be covered with dust."

Narrated Jabir (may Allah be pleased with him): It never happened that anything was asked from the Prophet (peace and blessings of Allah be upon him) and he said: "No (I will not give it)."

Sayyiduna Anas (may Allah be pleased with him) says: I served the Prophet Muhammad (peace and blessings be upon him) for ten years. The Prophet (peace and blessings be upon him) never even said "Uff" to me, nor ever said: "Why did you do this?" or "Why did you not do this?"

Sayyiduna Abu Dharr (may Allah be pleased with him) says that I heard the Noble Prophet (peace and blessings of Allah be upon him) say: "Whoever calls a Muslim a sinner or a disbeliever, and in reality he is not a sinner or a disbeliever, then the one who said it will himself become a sinner and a disbeliever."

Narrated from Sayyiduna Thabit bin Dhahak (may Allah be pleased with him) that the Noble Prophet (peace and blessings of Allah be upon him) said: "Whoever swears by any religion other than Islam (i.e., deliberately swears to become a disbeliever), then he is as he has sworn (i.e., of that religion). And it is not obligatory upon the son of Adam to fulfill a vow which is beyond his capacity. And whoever commits suicide with anything in this world, he will be punished with that very thing on the Day of Resurrection. And whoever curses a believer, (its sin) is equal to killing him. And whoever calls a believer a disbeliever, this too is equal to killing him."

Sayyiduna Hudhaifah (may Allah be pleased with him) says: I heard the Noble Prophet (peace and blessings of Allah be upon him) saying: "The tale-bearer will not enter Paradise."

Narrated from Sayyiduna Abu Bakrah (may Allah be pleased with him) that a person was mentioned in the presence of the Prophet (peace and blessings of Allah be upon him), and a man praised him greatly. So the Prophet (peace and blessings of Allah be upon him) said: "May Allah have mercy on you, you have cut his neck (by praising him like this)." And he (peace and blessings of Allah be upon him) repeated this sentence several times. (Then he said): "If any of you wants to praise someone unnecessarily, he should say: 'I think him to be such and such,' if he really believes him to be so, and Allah knows best about him (whether he is good or bad), and he should not say that he is good in the sight of Allah."

Narrated from Sayyiduna Anas bin Malik (may Allah be pleased with him) that the Messenger of Allah (peace and blessings of Allah be upon him) said: "Do not harbor malice and envy among yourselves, and do not cut off mutual relations, but be servants of Allah and brothers to each other. And it is not permissible for any Muslim to remain apart from his (Muslim) brother for more than three days due to any dispute."

Narrated Abu Huraira (may Allah be pleased with him) that the Messenger of Allah (peace and blessings of Allah be upon him) said: "Beware of suspicion, for suspicion is the most false of speech. Do not search for (each other's) faults or investigate, and do not envy one another, nor turn away from one another, nor bear hatred against one another. Rather, be servants of Allah and brothers to one another."

Umm al-Mu'mineen Aisha (may Allah be pleased with her) narrates that the Prophet Muhammad (peace and blessings be upon him) said: "I think that so-and-so (those two persons) do not know anything about our religion." And in another narration: "I think that so-and-so people do not recognize our religion upon which we are."