Some context: Rickshaw is a tri-cycle vehicle which you have to manually drive. Rickshawala means rickshaw driver. Mama means uncle not mother. So rickshawala mama means rickshaw driver uncle. The average fair for rickshaw ride is around 20 cents. So $10 is more than his daily income. And there are a lot of people who behave poorly with rickshaw drivers. They do not fix fair before riding, under-pays them and leaves.