Justice means fairness, equity or righteousness.
To be treated equally or justly is the inborn right of all human beings. That is why Islam has given utmost importance to justice. The importance of justice can be revealed through following verses and ahadiths:
VERSES OF QURAN:
1) O ye who believe! Stand out firmly for justice, as witnesses to Allah, even as against yourselves, or your parents, or your kin, and whether it be (against) rich or poor: for Allah can best protect both. Follow not the lusts (of your hearts) lest ye swerve and if ye distort (justice) or decline to do justice, verily Allah is well-acquainted with all that ye do. (Surah An-Nisa 136)
2) If you do judge, judge between them justly. Allah loves the just. (Surah al-Maida, 42)
3) You who believe! Show integrity for the sake of Allah, bearing witness with justice. Do not let hatred for a people incite you into not being just. Be just. That is closer to taqwa. Fear [and respect] Allah. Allah is aware of what you do. (Surah al-Maida, 8)
4) We sent Our Messengers with the Clear Signs and sent down the Book and the Balance with them so that mankind might establish justice. (Surat al-Hadid, 25)
5) Allah does not forbid you from being good to those who have not fought you in the deen or driven you from your homes,or from being just towards them. Allah loves those who are just. Allah merely forbids you from taking as friends those who have fought you in the religion and driven you from your homes and who supported your expulsion. Any who take them as friends are wrong doers. (Surat al-Mumtahana, 8-9)
1) Anas ibn Malik reported: The Messenger of Allah, peace and blessings be upon him, said, “When you judge, you must judge with justice; and when you kill, you must do so in the best way. Verily, Allah the Exalted is excellent and He loves excellence (al-ihsan).” (At-Tabarani, Al-Mu’jam Al-Awsat, Number 5884, Sahih) 2) "Behold!...