Hadees Related to Injustice (Zulm)

Abdullah Ibne-'Abbas Radiyallahu 'anhuma narrates that Nabi Sallallahu 'alaihi wasallam said: The Shaheed (martyr) will be brought on the Day of Resurrection and made to stand for reckoning.
Then the giver of Sadaqah (charity) will be brought and made to stand for reckoning. Then those people will be brought who suffered many trials and hardships in the world; for them neither the Scale (of
justice) will be established, nor will any Court (of accountability) be established for them. They will be bestowed with such immense rewards from Allah that people who had lived in ease and comfort
would wish that their bodies had been cut with scissors for the reward, it would have bestowed upon them. (Tabarani, Majma-'uz- Zawaid)

Hadees Related to Sadaqah (Sadqa)

      Abu-Hurairah Radiyallahu 'anhu narrates that Rasulullah Sallallahu 'alaihi wasallam said: A man said indeed I will give Sadaqah (quietly)! He came out with his Sadaqah and placed it in the hands of a thief. In the morning people began to talk and say: Sadaqah was given to a thief. The man said: O Allah! All praise is for You, I will indeed give Sadaqah. And he came out with Sadaqah and placed it in the hands of an adulteress. In the morning people began to talk and say Sadaqah was given to an adulteress last night. The man said: O Allah! All praise is for You, in giving Sadaqah to an adulteress. I will surely give Sadaqah. He came out with Sadaqah and placed it in the hands of a rich man. In the morning people began to talk and say: Sadaqah was given to a rich man. The man said: O Allah! All praise is for You in giving Sadaqah to a thief, an adulteress and a rich man. He then had a dream in which he was told that his .Sadaqah which was made to be given to a thief, may perhaps result in his refraining frOm stealing, to the adulteress, so that she may perhaps refrain from adultery, and to the rich man so that he may perhaps pay heed and spend from what Allah had given
him. (Sahih-Bukhari)

Note: Because of this man's sincerity Allah accepted all three of this man's Sadaqat