Perhaps you're thinking of the short story "The Monkey's Paw" by W.W. Jacobs? In that story, the monkey's paw is a magical talisman that grants three wishes to its owner. However, the wishes always have unintended and disastrous consequences, making the paw more of a symbol of caution and the dangers of unchecked desires rather than having distinct personifications.
If you can provide more context or specify the source of your question, I may be able to assist you further.