Riyad as-Salihin (The Meadows of the Righteous)
by Imam Nawawi
61. Chapter: On forbidding miserliness and avarice
Allah Almighty says, "But as for him who is stingy and self-satisfied, and denies the Good, We will pave his way to Difficulty." (92:8-11)
The Almighty says, "It is the people who are safe-guarded from the avarice of their own selves, who are successful." (64:16).
563. Jabir reported that the Messenger of Allah, may Allah bless him and grant him peace, said, "Beware of injustice. Injustice will be darkness on the Day of Rising. Beware of avarice. Avarice destroyed those before you and prompted them to shed each other's blood and to make lawful what Allah had made unlawful for them." [Muslim]