The most famous legend of Tirumala explains why a hill temple receives offerings of money and gold from millions of devotees each year. According to Vaishnava tradition, the Venkateswara form is a composite deity that emerged when Vishnu descended to Earth in response to the prayers of the sage Bhrigu. The Puranas describe Venkateswara as the Lord of the Kali Yuga, the deity to be worshipped in the present age.
The most prominent legend concerns Venkateswara's marriage to Padmavati, an incarnation of Lakshmi. To fund the wedding, Venkateswara took a loan from Kubera, the god of wealth, and agreed to remain on Venkatadri Hill until the loan is repaid. This is why, tradition holds, he continues to reside at Tirumala to this day.
The legend also explains the defining spiritual economy of the shrine. Devotees who place money and gold in the temple hundi are understood to be helping to repay Venkateswara's debt to Kubera. Every offering is seen as a contribution toward settling the loan that financed the divine wedding, which is why giving at Tirumala carries such a poignant devotional meaning.
The seven hills of Tirumala are identified with Adishesha, the serpent of Vishnu, who manifested as a mountain range to protect the deity. Each hill has a specific name and significance: Venkatadri, Vrishabhadri, Garudadri, Seshadri, Narayanadri, Neeladri, and Anjanadri.
This perpetual offering makes Tirumala the richest temple in the world, a theme explored in the next section. For another great Andhra shrine, compare the Srisailam Mallikarjuna Temple on the Nallamala hills.