‘Money attracts Money’ is one of those common sayings when it comes to investing in mutual funds. Everyone would like to make hefty money, if possible, even become a crorepati in India. MFs do have the potential to make an investor a crorepati. But just like every other market-related instrument, MFs too are subject to risks and have their moments of ups and downs. However, the real trick is when returns are fetched on a long-term basis. In this case, the 15X15X15 rule is the best method to build a corpus of around ₹1 crore.