Generosity and non-stealing is the secret of prosperity. The wife of Vishnu is Lakshmi, the goddess of wealth. That is the secret – giving is connected with the heart chakra or anahata chakra; it is connected with love, Vishnu is God of love; when you love, when you give and share, you will have prosperity. That is why Lakshmi is the wife of Vishnu. When you practice tithing regularly, Lakshmi will bless you, symbolically. Vishnu is the Preserver, a manifestation of Love. The result is Lakshmi, abundance and prosperity.
Source: Expert from The Inner Teaching of Hinduism Revealed, Master Choa Kok Sui