Abdullah bin Amr (may Allah be pleased with them both) said that the Messenger of Allah (peace and blessings be upon him) said: "Beware of avarice, for it destroyed those who came before you. It commanded them to sever ties of kinship, so they severed them; it commanded them to be miserly, so they were miserly; and it commanded them to commit sins, so they committed sins."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الزكاة / 7818