Neivanai Arulmigu Swarnakateshwarar Temple (historically known as Thiru Nelvennai) is an ancient 10th-century Chola granite sanctuary and the 10th holy Paadal Petra Sthalam in the historic Nadu Naadu region of Tamil Nadu. Tucked away in a tranquil rural setting near Ulundurpet in Kallakurichi district, this sacred shrine derives its unique name Nel-Vennei (Butter from Paddy) from the divine miracle where fragrant butter oozed out of wild paddy grains to supply ghee for Sage Sharabhanga's daily abhishekam.
Enshrined in the 7th-century Tamil Tevaram hymns composed by child-saint Thirugnanasambandar, the temple is celebrated for bestowing golden prosperity (Swarnam). The temple complex features a classic Dravidian Rajagopuram, an inner sanctum housing the Swayambhu Lingam of Swarnakateshwarar, a dedicated shrine for Goddess Neelamalarkkanni, the sacred Bamboo tree (Moongil Sthala Vriksham), and the holy Swarna Theertham. Pilgrims visit Neivanai to seek financial prosperity, removal of debt, agricultural abundance, and freedom from astrological hurdles.