Sayyiduna Ibn Umar (may Allah be pleased with them both) said: A time passed over us when none of us thought that he had more right to the dinar and the dirham than his Muslim brother, and now we are in a time when the dinar and the dirham are dearer to us than our Muslim brother. I heard the Messenger of Allah (peace and blessings be upon him) say: "When people become miserly with the dinar and the dirham, abandon jihad in the path of Allah, cling to the tails of cattle, and trade by 'inah, Allah Almighty will impose upon them an affliction that He will not lift until they return (from their ways)."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 13526