The given statement, "Do unto others as you would have them do unto you," is a well-known moral principle commonly referred to as the "Golden Rule." This principle is most prominently found in the Bible, specifically in the teachings of Jesus Christ. It encourages individuals to treat others with kindness, empathy, and fairness, based on the premise that they would desire the same treatment in return. This principle is not exclusive to the Bible, as similar teachings can also be found in other religious texts, but it is most commonly associated with the Bible.