A very bad and dirty habit to be commonly found is to reveal and make public the fault of other people. People don’t think for a second to comment upon any other fault or weakness. While avoiding harm to others and concealing the weakness of one’s fellow human beings is a prominent theme of the moral teachings of the Quran and the Sunnah. Please have a look at the Few Sayings of our Prophet are as follows:

1-  “If a person conceals the weakness of another in this world, Allah will conceal their weakness in the hereafter
[Al Nawawi, Riyad al Salihin p 135, Hadith no 245; al Ghazali, Kitab Adab p 344]

2-Whoever protects the honor of his brother, will have Allah protect his countenance from the fire on the Day of Judgement
[Al Nawawi, Riyad al Salihin p 488, Hadith no 1530]

3-Do not harm Muslims, and do not revile them, nor pursue their imperfections. For verily, whosoever pursues the imperfections of his brother shall have his own imperfections pursued by Allah
[Sunan of al Tirmidhi, as quoted in Principles of State and Government in Islam, p 85]

Whoever sees a Muslim’s imperfection and then conceals it is like one who gives new life to a female infant buried in the desert.
[Bukhari]

Verily, Allah does not like people who are obscene and who spread obscenities.
[Bukhari]