Sayyiduna Imran bin Husayn (may Allah be pleased with him) said: The Messenger of Allah (peace and blessings be upon him) saw a ring on a man's upper arm and said: "What is this?" He said: (It is for) al-wahinah. The Messenger of Allah (peace and blessings be upon him) said: "It will only increase you in weakness. Throw it away from yourself; if you die in this state, you will be entrusted to it."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 15482