I have . . . . . . money. I will hire a rickshaw.

In this sentence, we are referring to an uncountable noun, which is "money." Uncountable nouns are used with the phrase "a little" to indicate a small, unspecified quantity. "A little" is the correct phrase to use in this context to convey the idea that there is some money, albeit not a large amount.

The correct sentence should be: "I have a little money. I will hire a rickshaw." This usage accurately expresses the concept of having a small amount of money for the purpose of hiring a rickshaw.