The Book of Virtue, Good Manners and Joining of the Ties of Relationship (Kitab Al-Birr was-Salat-I-wa'l-Adab)

Muslim :: Book 32 : Hadith 6248

Jabir b. Abdullah reported that Allah's Messenger (may peace be upon him) said: Be on your guardagainst committing oppression, for oppression is a darkness on the Day of Resurrection, and be on your guard against pettimindedness for pettimindedness destroyed those who were before you, as it incited them to shed blood and make lawful what was unlawful for them.