Here's a hair-raising statistic for you. The Lord Venkateshwara temple in Tirumala, Andhra Pradesh - the richest Indian temple in terms of the revenue generated - earns as much as one-tenth of its annual revenue from the sale of hair offered by devotees. Every year, thousands of people who visit the temple get tonsured to offer their hair to Lord Venkateshwara, in keeping with a centuries-old tradition.