Sri Bhaktavatsala Perumal Temple (Thirunindravur)

Temple tradition holds that this is the site where Varuna, the Vedic god of the oceans and rain, worshipped Vishnu, a legend directly preserved in the name of the temple's tank, Varuna Pushkarani, which continues to serve the shrine today. The Perumal's name, Bhaktavatsala ("one who is affectionate toward his devotees") reflects a broader devotional emphasis found across this Divya Desam's own textual and oral traditions, framing the temple less around a single dramatic epic episode and more around the deity's constant, personal accessibility to worshippers, of whom even a Vedic god could be one.

A second, widely repeated temple legend ties the very name Thirunindravur to the story of the Ksheera Sagara Manthanam, the churning of the ocean of milk by Devas and Asuras in search of Amrita. According to this tradition, Goddess Lakshmi, having emerged from the churned ocean, performed penance standing in deep devotion at this exact spot before proceeding to Vishnu, and the place came to be called "Thiru Nindra Ur," the sacred town where she stood. Between the Varuna legend attached to the temple tank and the Lakshmi legend attached to the town's very name, Thirunindravur carries two distinct devotional foundation stories rather than the single-episode legend typical of many Divya Desams.

The temple is generally dated to the Pallava period, with surviving inscriptions at the site dated between 820 and 890 CE, placing them within the reign of the Pallava king Nripatungavarman. These inscriptions make Thirunindravur one of the more securely epigraphically dated Divya Desams in the Chennai region, anchoring its temple activity to a specific and verifiable period of Pallava rule rather than relying solely on devotional tradition for its antiquity.

Later tradition also credits the medieval Cholas and, subsequently, the Vijayanagara-era Nayak governors with further building and endowment at the site, a pattern of successive dynastic patronage shared with many of the smaller Divya Desams around Chennai and Kanchipuram.

The sanctum is built in the Utpala Vimanam style, and the temple complex is fronted by a four-tiered rajagopuram, a scale appropriate to a well-established regional shrine rather than a minor wayside temple. Bhaktavatsala Perumal is enshrined in the standing posture facing east, with the temple's goddess housed in a separate shrine within the same precinct.

The Varuna Pushkarani tank sits within the temple precinct and remains directly tied to the sea-god legend the temple is known for, serving both a ritual function for temple festivals and as a physical anchor for the Varuna tradition associated with the site.

The temple's principal annual festival is a ten-day Brahmotsavam held in the Tamil month of Chittirai (April–May), during which the utsavar is taken in daily processions through the streets around the temple mounted on a different vahanam (ceremonial vehicle) each day, a format common to major Vishnu temple Brahmotsavams across Tamil Nadu but celebrated here with particular local prominence given the size of the festival relative to the temple's otherwise modest scale.

As with other Divya Desams in the region, Vaikunta Ekadashi in Margazhi (December–January) and other fixed Vaishnava calendar observances are also marked, drawing devotees from across the northern Chennai suburbs given the temple's rail accessibility.

Daily worship follows the standard Agamic schedule of morning and evening poojas for Bhaktavatsala Perumal, with archana and abhishekam offered as part of the regular ritual calendar; elaborate additional rites are reserved chiefly for the Chittirai Brahmotsavam and other festival days.

Being directly on the Chennai suburban rail line, the temple sees a steady flow of local devotees for routine darshan in addition to pilgrims visiting as part of a wider Divya Desam circuit, so weekday mornings and early evenings tend to offer the calmest darshan experience.