It is narrated from Sayyida Aisha (may Allah be pleased with her) that the Messenger of Allah (peace and blessings be upon him) said: There are three types of registers with Allah Almighty. Allah does not care about one register, He will not leave anything from one register, and He will not forgive one register. So the register which Allah will not forgive is associating partners with Allah, as Allah Almighty has said: And whoever associates partners with Allah, Allah has forbidden Paradise for him. The register about which Allah does not care is the servant's wrongdoing against himself; this matter is between him and his Lord. For example, if he leaves a fast for a day or misses a prayer, then indeed, if Allah wills, He will forgive him and overlook it. And the register from which Allah will not leave anything is the wrongdoing of people against each other; in these matters, retribution will inevitably be taken.

Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said: There are three traits; whoever possesses them is a hypocrite, even if he fasts, prays, and thinks that he is a Muslim: when he speaks, he lies; when he makes a promise, he breaks it; and when he is entrusted, he betrays the trust.

It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) that the Noble Prophet (peace and blessings be upon him) said: He is not from among us who does not respect the elder, does not show compassion to the younger, does not enjoin good, and does not forbid evil.

Narrated from Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: Whoever’s intercession becomes a barrier to any limit set by Allah, he has opposed the command of Allah. Whoever dies in debt should remember that on the Day of Resurrection there will be no abundance of dirhams and dinars; rather, there will be exchange of good and bad deeds. Whoever knowingly argues in favor of falsehood will remain under the wrath and anger of Allah until he desists. Whoever accuses a believer of a crime that is not found in him will be detained in Radhghatul-Khabal (the pus of the people of Hell) until he withdraws from what he has said.

It is narrated from Sayyiduna Abdullah bin Amr (may Allah be pleased with them both) that the Noble Prophet (peace and blessings be upon him) said: It is not lawful for a man to divorce one wife in order to marry another, nor is it lawful for a man to make a deal over his companion’s deal until that companion leaves the deal. It is not lawful for three people present in a deserted place except that they appoint one of them as a leader. Similarly, when there are three people in a wilderness, two of them should not whisper to each other excluding the third.

It is narrated from Sayyiduna Abdullah bin Amr (may Allah be pleased with them both) that the Noble Prophet (peace and blessings be upon him and his family) said: The disobedient to parents, one who is habitual in drinking alcohol, one who reminds others of his favors, and the child of adultery — all these people will not enter Paradise.

It is narrated from Sayyiduna Ali (may Allah be pleased with him), he says: The Noble Prophet (peace and blessings be upon him and his family) said to me: O Ali! Perform ablution completely, even if it feels burdensome to you, do not eat charity, do not make a donkey mount a mare, and do not sit in the gathering of astrologers.

It is narrated from Sayyiduna Abdullah bin Amr (may Allah be pleased with them both) that the Noble Prophet (peace and blessings be upon him and his family) said: Whoever possesses four traits will be a hypocrite, and whoever has one of these four traits will have a trait of hypocrisy until he gives it up: when he speaks, he lies; when he makes a promise, he breaks it; when he makes a pact, he betrays it; and when he quarrels, he abuses.

Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said: Four things are from the matters of ignorance, and people will never abandon them: (1) criticizing lineage, (2) wailing over the dead, (3) dealing with the stars, and (4) saying that a camel got scabies, so it gave scabies to all the others—tell me, who gave scabies to the first one?

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: Hearts are of four types: (1) A pure and clean heart, which is bright like a lamp; (2) A heart enclosed in a covering, from which the covering can never be removed; (3) An inverted heart; and (4) A double-faced heart. Their details are as follows: The pure heart refers to the heart of a believer, its lamp is its light; the heart enclosed in a covering belongs to a disbeliever; the inverted heart is that of a hypocrite who, after attaining the knowledge of truth, denies it; and the double-faced heart is the one in which there is both faith and hypocrisy. In it, the example of faith is like that of a green plant, which is nourished by pure water, and the example of hypocrisy is like that of a boil, which grows due to pus and blood. Whichever of the two increases more, that one prevails.