Imam Baqir [a] said: "It is compulsory for every Muslim to conceal even seventy great faults of his fellow Muslims (in order to save his prestige)." (His faults should be dealt with personally but not be spread among the members of society).

Bihar-ul-Anwar, vol. 74, p. 301

Imam Amir ul Mu'mineen Ali [a] said: "Accept the apology of your Muslim brother and if he has not any, invent one for him yourself."

Bihar-ul-Anwar, vol. 74, p. 165

Imam Amir ul Mu'mineen [a] said: "The worst form of betrayal is the disclosure of confidential information."

Mustadrak Al-Wasa'il-ush Shi'ah, vol. 12, p. 305, No.14155

Imam Amir ul Mu'mineen Ali [a] said: "Your admonition (to the wrong-doer) in the presence of people is to humiliate him." (You must talk to him in private).

Ghurar-ul-Hikam, p. 322

Imam Sadiq [a] said: "From the most beloved deeds with Allah, Almighty and Glorious, is bringing happiness to a Muslim believer such as: satiating his hunger, removing his grief, or paying his debt."

Al-Kafi, vol. 2, p. 192

Righteous Deeds

The Holy Prophet [s] said: "To make peace between two individuals (in comparison) is worthier than one's entire prayers and fastings."

Bihar-ul-Anwar, vol. 76, p. 43

Imam Amir ul Mu'mineen [a] said: "If a person thinks well of you, make his idea hold true."

Nahjul-Balaghah, p. 511, saying No. 248

The Holy Prophet [s] said: "He who leads (others) to piety (will be rewarded) the same as the doer of that good action."

Bihar-ul-Anwar, vol. 96, p. 119

Imam Sadiq [a] said: "There are six things that a Muslim believer can be profited by after his death:

1. A righteous child who seeks forgiveness for him.
2. The Holy scripture which will be recited from.
3. A well which he had dug (for the benefit of people).
4. The tree which he had planted.
5. The charity of water that he had caused to flow.
6. A good tradition which will be followed (by people) after him."

Khisal by Saduq, p.323

The Holy Prophet [s] said: "If it were not hard upon my Ummah, I would enjoin them to brush (their teeth) with every prayer."

Bihar-ul-Anwar, vol. 76, p. 126

Injustice and Transgression

The Holy Prophet [s] said: "On the Day of the Resurrection a caller will announce: "Where are the oppressors and their assistants and those who prepared an inkwell for them or fastened a bag for them or supplied the ink of a pen (for them)? Then, gather these (people) with them!'"

Thawabab-ul-'A'mal, p. 309

Imam Amir ul Mu'mineen Ali [a] said: "By Allah, even if I am given all the domains of the seven countries with all that exists under the skies in order that I may disobey Allah to the extent of snatching one grain of barley from an ant, I would not do it."

Nahjul-Balagha, p. 347

Imam Baqir, the fifth Imam, [a] said: "There are three types of transgressions: the one which Allah, the Exalted, forgives, the one He does not forgive, and that one which He does not ignore. Thus, the transgression that He does not forgive is infidelity unto Allah, the Almighty, and Glorious. And, the transgression which Allah forgives is the one that a person commits (against) himself between him and Allah, to Whom belong Might and Majesty. But the transgression which He does not ignore is the one committed against rights of men."

Explanation

The third transgression is referring to when a person infringes upon the rights of others. The way to forgiveness is first by satisfying (contenting) the person whose rights were infringed upon. If that person forgives him, then the transgression becomes as one that the person has commited against himself. He may then seek forgiveness from Allah.

AI-Kafi, vol. 2, p. 330

Imam Amir ul Mu'mineen Ali [a] said: "Transgression causes the foot to go astray, takes the blessings, and kills the nations."

Sharh Ghurar-ul-Hikam, vol. 2, p. 36

Imam Amir ul Mu'mineen Ali [a] said: "... Nothing is more inducive of the reversal of Allah's bounty or for hastening of His retribution than continuance in oppression, because Allah hears the prayer of the oppressed and is on the look-out for the oppressors."

Nahjul-Balagha, Letter 53