Asura Commanders Onan & Kanthan Legend
According to the Kanchi Puranam, during the ancient Puranic era, two mighty Asura commanders (Senapatis) of King Banasura named Onan and Kanthan realized that physical power without spiritual grace leads to destruction. Seeking eternal redemption, they arrived at Kanchipuram, dug a sacred bathing tank (Onakandhan Theertham), and installed two Shiva Lingams.
Onan performed intense penance worshipping Sri Oneshwarar, while Kanthan worshipped Sri Kanthashwarar. A third Asura commander named Jalandharan established Sri Jalandhareswarar in the outer prakaram. Lord Shiva, pleased by their sincere devotion, appeared before them, granted spiritual liberation (Moksha), and decreed that the sthalam would bear their names as Onakkandhan Thali (Thali in ancient Tamil = Temple).
Saint Sundarar's Tamarind Leaf Gold Miracle
During Saint Sundaramurthy Nayanar's pilgrimage through Thondai Nadu, he ran out of funds to feed his large entourage of Nayanmar disciples. Exhausted and distressed, Sundarar entered Onakkandhan Thali Temple and sang a moving Tevaram decad starting with the words "Naiyum En Manam" (நையும் என் மனம்). He sang: "Oh Lord of Onakkandhan Thali! You reside in this grand temple, yet Your devotees suffer from hunger! If You do not grant me gold to feed Your servants, who else shall I turn to?"
Lord Shiva, deeply touched by Sundarar's plea, turned the green leaves of the local Tamarind tree (Puliya Maram) into shimmering gold coins (Pon) and showered them into Sundarar's upper cloth. Overjoyed by the Lord's divine play (Thiruvilaiyadal), Sundarar gathered the gold coins and organized a grand feast (Annadhanam) for all pilgrims in Kanchipuram.