Riyad as-Salihin

The Messenger of Allah (ﷺ) said, "Do not practise Najsh (to cheat).".

The Messenger of Allah (ﷺ) prohibited the practice of Najsh..

A man mentioned to the Messenger of Allah (ﷺ) that he was often deceived in dealings. The Messenger of Allah (ﷺ) said to him, "When you enter into a transaction you should say: "There should be no deception."'.

The Messenger of Allah (ﷺ) said, "He who deceives another's wife or his slave is none of us.".

The Messenger of Allah (ﷺ) said, "Whosoever possesses these four characteristics is a sheer hypocrite; and anyone who possesses one of them possesses a characteristic of hypocrisy till he gives it up. These are: when he is entrusted with something, he proves dishonest; when he speaks, he tells a lie; when he makes a covenant, he proves treacherous; and when he quarrels, he behaves in very imprudent, evil, insulting manner.".

The Prophet (ﷺ) said, "For every one who breaks his covenant, there will be a (huge) flag on the Day of Resurrection and it will be said: 'This flag proclaims a breach of covenant by so-and-so."'.

The Prophet (ﷺ) said, "Every one who breaks a covenant will have a flag by his buttocks on the Day of Resurrection. It will be raised higher according to the nature of his breach. Behold, there will be no greater a sin with respect to breaking the covenant than that of a ruler who breaks his covenant with the Muslim masses.".

The Prophet (ﷺ) said, "Allah, the Exalted, says: 'I will contend on the Day of Resurrection against three (types of) people: One who makes a covenant in My Name and then breaks it; one who sells a free man as a slave and devours his price; and one who hires a workman and having taken full work from him, does not pay him his wages."'.

The Prophet (ﷺ) observed: "There are three (types of) people to whom Allah will neither speak on the Day of Resurrection nor look at them nor purify them, and they will have a painful chastisement." The Messenger of Allah (ﷺ) repeated it three times. Abu Dharr (May Allah be pleased with him) remarked: "They are ruined. Who are they, O Messenger of Allah?" Upon this, the Messenger of Allah (ﷺ) said, "One who lets down his lower garments (below his ankels) out of arrogance, one who boasts of his favours done to another; and who sells his goods by taking a false oath.".

The Messenger of Allah (ﷺ) said, "Verily, Allah has revealed to me that you should adopt humility. So that no one may wrong another and no one may be disdainful and haughty towards another.".

The Messenger of Allah (ﷺ) said, "When a person says: 'People have been ruined, he is the one to be ruined the most."'In another version: "He himself is the most ruined among them."

The Messenger of Allah (ﷺ) said, "Do not desert (stop talking to) one another, do not nurse hatred towards one another, do not be jealous of one another, and become as fellow brothers and slaves of Allah. It is not lawful for a Muslim to stop talking to his brother (Muslim) for more than three days."

The Messenger of Allah (ﷺ) said, "It is not lawful for a Muslim to desert (stop talking to) his brother beyond three nights, the one turning one way and the other turning to the other way when they meet, the better of the two is one who is the first to greet the other.".

The Messenger of Allah (ﷺ) said, "People's deeds are presented before Allah on Mondays and Thursdays, and then every slave (of Allah) is granted forgiveness (of minor sins) if he does not associate anything with Allah in worship. But the person in whose heart there is rancour against his brother, will not be pardoned. With regard to them, it is said twice: 'Hold these two until they are reconciled'.".

I heard the Messenger of Allah (ﷺ) as saying, "The Satan has despaired of being worshipped by those who engage in prayer in the Arabian Peninsula but (has not lost hope) in creating dissension among them.".

The Messenger of Allah (ﷺ) said, "It is not lawful for a Muslim to forsake his (Muslim) brother beyond three days; and whosoever does so for more than three days, and then dies, will certainly enter the Hell.".

I heard the Prophet (ﷺ) saying, "Whosoever forsakes his brother for a year is like one who sheds his blood.".

The Messenger of Allah (ﷺ) said, "It is not permissible for a believer to forsake his (Muslim) brother for more than three days. If three days have passed, he should meet him and greet him; and if other responds to it they will both share the reward; but if he does not respond, he will bear his sin and the one who (has taken the initiative to) greet (the other) will be absolved of the sin of forsaking (one's brother in Faith).".

the Messenger of Allah (ﷺ) said, "In the presence of three people, two should not hold secret counsel, to the exclusion of the third.".In Abu Dawud, Abu Salih related: I asked Ibn 'Umar: "What if there are four people." He said, "There is no harm in that."Malik reported in Al-Muwatta that 'Abdullah bin Dinar related: Ibn 'Umar and I were together in Khalid bin 'Uqbah's house which was situated in the market place. A man came to consult Ibn 'Umar. None besides me was present. Ibn 'Umar called another man in and we became four and said to me and the man he had called: Move away a bit because I have heard the Messenger of Allah (ﷺ) saying, "The two people should not hold secret counsel together excluding the third."

The Messenger of Allah (ﷺ) said, "When three of you are together, two of you must not converse privately ignoring the third till the number increases, lest the third should be grieved.".