In "Star Trek", what is the Ferengi's First Rule of Acquisition?

The answer is "Once you have their money, you never give it back" because it represents the first rule of acquisition followed by the Ferengi species in Star Trek. The Ferengi are a highly capitalistic and profit-driven race, prioritizing the accumulation of wealth above all else. As a result, they adhere to this principle, emphasizing the importance of retaining any financial gains made and avoiding any potential loss by never returning the money that they have acquired from others.