Allah The Exalted says: And Allah guides not the people who are Zalimun ( ones who are unjust).
 

Allah The Exalted says: No doubt! the curse of Allah is on the Zalimun (ones who are unjust, oppressors).

Allah The Exalted says: And Allah does not like the Zalimun (ones who are unjust).

Allah The Exalted says: Verily, the Zalimun (ones who are unjust) will be in a lasting torment.

Allah The Exalted says: There will be no friend, nor an intercessor for the Zalimun (ones who are unjust ), who could be given heed to.
 

Abu Dharr (RA)narrated: Allah's Messenger (saw) as saying that he reported it from His Rabb (sustainer), The Exalted and Glorious: "Verily I have made oppression unlawful for Myself and upon My servants , so do not commit oppression amongst each other."

Abu Hurairah(RA) narrated: Abul Qasim (saw) said, "Whoever points his brother with metal, so indeed the angels curse him until he puts it down even though his brother comes from his father and mother."
 

Abdullah bin Umar (RA) narrated : Allah's messenger (saw) said, "Injustice will be a darkness on the day of Standing".
 

Ibn Abbas (RA) narrated : The Prophet (saw) sent Muadh to Yemen and said, "Fear the curse of the oppressed one as there is no screen between his invocation and Allah."
 

Anas (RA) narrated:Allah's Messenger (saw) said,"Help your brother, whether he is the oppressor or the oppressed one." People asked, "O Allah's Messenger (saw)! We rightfully help the oppressed but how can we help him if is an oppressor?" The Prophet (saw) said, "By preventing his hands from oppressing others."

 Ibn Umar (RA) narrated:The Prophet (saw)forbade one from eating two dates together at a time unless he gets the permission from his companion.

Salim narrated from his father: The Prophet (saw) said "Any person who takes anything from land unjustly will be sunk down the seven earths on the day of Standing."
 

Abu Hurairah (RA) narrated: Allah's messenger (saw) said, "Whoever has wronged his brother should ask for pardon as there will be neither dinar nor dirham( in the hereafter), for he should do this before some of his good deeds will be taken and given to his brother, and if he will have no good deeds, then some of the bad deeds of his brother will be loaded on him (in the hereafter).

 

Abu Musa (RA)narrated some people asked The Prophet (saw) whose Islam is the best? He ö replied, "The person from whose hands and tongue the muslims are safe."
 

Umm-e-Salma (RA) narrated : The Prophet (saw) said, "I am only a human being, and you people have disputes. May be someone amongst you can present his case in a more eloquent and convincing manner than the other, and I give my Judgment in his favour according to what I hear. Beware! If I ever give (by error) somebody something of his brother's right then he should not take it as I have given him a piece of (Hell) fire."