I want to know the answer to the following question:
What notable vow was sworn by the mendicant orders?
All the background I'm provided with is that "Religious groups such as the Waldensians and the Humiliati also attempted to return to the life of early Christianity in the middle 12th and early 13th centuries, but they were condemned as heretical by the papacy.". Is that enough to answer the question?
Answer: no