Thividaiyaru - Marundhueesar Sivanandheswarar Temple

Tiruvedaiyaru Arulmigu Sivanandheeswarar Temple (historically known as Thiru Idaiyaru) is an ancient 10th-century Chola granite sanctuary and the 13th holy Paadal Petra Sthalam in the historic Nadu Naadu region of Tamil Nadu. Situated on a serene riverine island strip (Idai) between the flowing waters of the South Pennai River and the Malattar River, this sacred shrine is renowned throughout Tamil Nadu as a paramount Marundheeswarar (Physician Shrine) where Lord Shiva heals physical ailments and karmic diseases.

Enshrined in the 7th-century Tamil Tevaram hymns composed by Saint Sundaramurthy Nayanar, the temple complex features a classic Dravidian Rajagopuram, an inner sanctum housing the Swayambhu Lingam of Sivanandheeswarar, a dedicated shrine for Goddess Soundaranayaki, the sacred Marudhu tree (Sthala Vriksham), and the serene river junction Sangama Theertham. Pilgrims visit Tiruvedaiyaru to seek divine cures for chronic health issues, stomach ailments, and to bathe in the holy river confluence.

Origin of the Name 'Idai-Aaru' (Land Between Rivers)

According to the Sthala Puranam, the ancient name of this sacred village, Thiru Idaiyaru, literally translates to "The Holy Place Situated Between Rivers". The temple stands on a fertile deltaic land strip (Idai) embraced by two rivers: the South Pennai River to the north and the Malattar River to the south.

Lord Marundheeswarar & Sage Agastya's Herbal Healing

Puranic lore records that Sage Agastya established a sacred medicinal garden (Siddha Vanam) around Tiruvedaiyaru. When local Chola chieftains and celestial devas suffered from chronic fevers and digestive diseases, Sage Agastya prayed to Lord Shiva.

Lord Shiva manifested from the Swayambhu Lingam as Marundheeswarar (The Lord of Divine Medicines) and revealed herbal formulas combined with sacred river water. The sick were instantly cured after consuming the herbal prasadam and bathing in the river confluence. Hence, the Lord is revered as both Sivanandheeswarar (The Lord of Divine Bliss) and Marundheeswarar.

Sundaramurthy Nayanar's Hymns of Healing

When Saint Sundaramurthy Nayanar visited Tiruvedaiyaru during his pilgrimage across Nadu Naadu, he sang 10 soulful Tevaram verses in the 7th Thirumurai starting with "Marundhavai mandhiram... ", praising Sivanandheeswarar as the supreme physician who cures the disease of repeated rebirths (Janma Roga) and grants eternal bliss.

• Tevaram (7th Thirumurai): Glorified by Sundaramurthy Nayanar in 10 pathigams beginning with "Marundhavai mandhiram maruthuvam aavanum... " (மருந்தவை மந்திரம் மருத்துவ மாவனும்).
• Periya Puranam: Sekkizhar commemorates Sundarar's pilgrimage to Thiru Idaiyaru in the 12th-century Shaivite hagiography.

• Parantaka Chola I Inscriptions (10th Century CE): Inscriptions carved on the sanctum outer wall record royal grants of land for maintaining daily morning food offerings (Nivedyam) and perpetual ghee lamps (Nanda Deepam).
• Rajaraja Chola I Grants: Epigraphs document endowments for maintaining Tevaram reciters (Oduvars) and protecting the riverbank embankments.

• Deltaic Hydro-Geology: Situated on an alluvial island between Pennai and Malattar, the temple foundation utilizes interlocking granite slabs engineered to withstand seasonal river inundations.
• Botanical Preservation of Marudhu Trees: The temple precinct preserves ancient Terminalia arjuna (Marudha Maram) trees, celebrated in Siddha medicine for cardiac and circulatory health.

• Marundheeswarar Healing Abhishekam: Special holy bathing performed for Lord Sivanandheeswarar with milk, tender coconut water, and sacred ash (Vibhooti) on Mondays for devotees seeking relief from chronic illness.
• Four Daily Kala Poojas: Morning Kalasanthi, Midday Uchikalam, Evening Sayarakshai, and Night Ardha Jamam.
• River Confluence Bathing: Holy bathing ritual performed at the Pennai-Malattar sangam on New Moon days.

• Best Months: October to March (pleasant weather for riverbank visits).
• Major Festivals: Maha Shivaratri (Feb–March), Margazhi Arudra Darshan (Dec–Jan), Masi Magam River Festival (Feb–March), Monthly Pradosham.

• Tevaram Thirumurai Canon (7th Thirumurai, Sundaramurthy Nayanar).
• Periya Puranam by Sekkizhar (Sundarar Puranam).
• ASI South Indian Inscriptions, Volume XIX (Inscriptions of Kallakurichi District).