Ahirbudhnya is the Vedic deity of Uttara Bhadrapada Nakshatra. This nakshatra spans 3°20' to 16°40' of Pisces and is ruled by Saturn. His name means "the serpent of the deep." The Rig Veda calls on him together with the waters.
The Puranas count him among the 11 Rudras, the fierce forms of Shiva. A long Pancharatra text on the worship of Sudarshana, the discus of Vishnu, also carries his name.
| Ahirbudhnya | Key facts |
|---|---|
| Other forms in the texts | Ahirbudhna, Ahirbradhna, Ahivradhna |
| Nakshatra | Uttara Bhadrapada (3°20' to 16°40' Pisces) |
| Nakshatra ruler | Saturn |
| Paired deity | Aja Ekapada, deity of Purva Bhadrapada |
| Group | One of the 11 Rudras |
| Parentage | Son of Vishvakarma (Vishnu Purana 1.15), or of Bhuta and Sarupa (Bhagavata Purana 6.6.17-18) |
| Name mantra | Om Ahirbudhnyaya Namah |
| Text named after him | Ahirbudhnya Samhita (Pancharatra) |
In this article
What the Name Ahirbudhnya Means
The name joins 2 Sanskrit words. Ahi means serpent. Budhnya comes from budhna, the bottom or base of something, so it means "belonging to the depths."
Put together, Ahirbudhnya is the serpent who lives at the bottom of the waters. Some Vaishnava commentators read budhna as "foundation" and see him as the serpent who supports the world from below, like Ananta.
The Puranas and the Mahabharata give the name in slightly different forms, such as Ahirbudhna, Ahirbradhna and Ahivradhna. All of them refer to the same deity.
Ahirbudhnya in the Rig Veda
Ahirbudhnya has no hymn of his own in the Rig Veda. He is always named in a group with other deities, often next to the waters, the ocean or Aja Ekapada. The clearest example of his link with water is Rig Veda 6.49.14:
तन्नोऽहिर्बुध्न्यो अद्भिरर्कैस्तत्पर्वतस्तत्सविता चनो धात्।
May Ahirbudhnya, with the waters and the rays, and Parvata and Savitar grant us their favour. (Rig Veda 6.49.14, first half)
The phrase adbhir arkaiḥ means "with the waters and the rays," and Griffith renders it as floods and lightnings. This verse is the textual basis for his link with water.
Ahirbudhnya and Aja Ekapada
Purva and Uttara Bhadrapada form a pair, and so do their deities. Aja Ekapada, the one-footed goat, rules Purva Bhadrapada. Ahirbudhnya rules the second half of the pair.
The Rig Veda already names them side by side. In 6.50.14, the poet asks Aja Ekapada, Ahirbudhnya, Earth and Ocean to hear the prayer. Rig Veda 7.35.13, from the well-known peace hymn, does the same:
शं नो अज एकपाद्देवो अस्तु शं नोऽहिर्बुध्न्यः शं समुद्रः।
May Aja Ekapada, the god, be gracious to us. Gracious be Ahirbudhnya, gracious the ocean. (Rig Veda 7.35.13, first half)
The nakshatra lists of the Taittiriya Samhita and Taittiriya Brahmana keep this order. Aja Ekapada takes the first Proshthapada, and Ahirbudhnya takes the second.
Astrologers often read the pair as one movement. Purva Bhadrapada brings intensity and sudden effort, and Uttara Bhadrapada brings the patience to hold that effort steady over time.
One of the 11 Rudras
Several Puranas and the Mahabharata list Ahirbudhnya among the Rudras. The lists do not all match, which is common in Puranic genealogy.
| Text | Reference | What it says |
|---|---|---|
| Matsya Purana | 5.29-30 | Lists him second among the Rudras, right after Ajaikapada |
| Bhagavata Purana | 6.6.17-18 | Names him (as Ahirbradhna) among the 11 principal Rudras born to Bhuta and Sarupa |
| Mahabharata | Adi Parva 1.60 | Names him (as Ahivradhna) among the 11 sons of Sthanu |
| Mahabharata | Anushasana Parva 13.17.100 | Includes Ahirbudhna, next to Ajaikapat, in the thousand names of Shiva |
| Vishnu Purana | 1.15 | Names him as a son of Vishvakarma, along with Ajaikapad and Tvashtri |
Aja Ekapada appears next to him in every one of these texts. The Vishnu Purana gives its own list of 11 Rudras in the same chapter, and Ahirbudhnya is not on it. There, he belongs to the family of Vishvakarma, the divine architect.
Texts on temple sculpture also include him. The Vishvakarma-shilpa lists him as the third of 11 Rudra forms and fixes the weapon held in each of his hands. The Rupamandana counts him as the ninth of 12.
The Ahirbudhnya Samhita
The Ahirbudhnya Samhita is a text of the Pancharatra tradition of Vishnu worship. The printed edition has about 3,880 verses in 60 chapters. Tradition says the original was much longer, and its date is uncertain, with scholars placing it in the first millennium CE.
The text opens with the sage Durvasas speaking to Bharadvaja. Durvasas repeats the teaching that Ahirbudhnya, a form of Shiva, once gave to Narada. So a Shaiva deity serves here as the teacher of a Vaishnava subject.
That subject is Sudarshana, the discus of Vishnu. The text gives Sudarshana mantras, explains how to make the Sudarshana yantra, and describes the worship of his many-armed form. It also covers creation, the vyuhas of Vishnu and the astras, or divine weapons.
Yoga gets more space here than in most Pancharatra texts. Otto Schrader notes that it describes Kundalini yoga with its chakras. A later study points out that its statements on Kundalini differ from one passage to another.
Ahirbudhnya and Uttara Bhadrapada Nakshatra
A nakshatra takes much of its nature from its deity. Uttara Bhadrapada shows the qualities of a serpent resting in deep water: patience, stillness, and strength that stays below the surface. Saturn, the nakshatra ruler, adds discipline and endurance.
People with the Moon here tend to feel deeply and keep their feelings private. They often work slowly and steadily, and they can carry heavy duties without complaint. Many are drawn to study or spiritual practice as life goes on. You can find your own birth nakshatra with the nakshatra calculator.
The same depth brings its own lesson. When it turns inward too far, it shows up as brooding or holding feelings back. Working with Ahirbudhnya means using that depth for reflection and for wise, patient action.
Saturn moves back into Uttara Bhadrapada on 9 October 2026 for its third and final pass, and it leaves on 8 February 2027. The effects of that period are covered in Saturn in Uttara Bhadrapada 2026.
Ahirbudhnya Mantra
The name mantra of Ahirbudhnya is a plain salutation to the deity:
ॐ अहिर्बुध्न्याय नमः
Om Ahirbudhnyāya Namaḥ
Om is the sacred syllable. Ahirbudhnyaya means "to Ahirbudhnya," and namah means "salutation." The whole line means "Om, salutation to Ahirbudhnya."
You will also see it written as Om Ahirbudhnya Namaha. Both spellings point to the same salutation, and Ahirbudhnyaya is the correct Sanskrit form.
No classical text gives a fixed list of benefits for this name mantra. People chant it when the Moon or the ascendant is in Uttara Bhadrapada, on the monthly star day, or while Saturn transits this nakshatra. Many chant it 108 times on a mala.
The Vedic Verse for Uttara Bhadrapada
The Nakshatra Suktam of the Taittiriya Brahmana gives a full Vedic verse for Ahirbudhnya. Its first half reads:
अहिर्बुध्नियः प्रथमान एति ।
श्रेष्ठो देवानामुत मानुषाणाम् ।
तं ब्राह्मणाः सोमपाः सोम्यासः ।
प्रोष्ठपदासो अभिरक्षन्ति सर्वे ॥Ahirbudhnya, the serpent of the deep, comes spreading wide, the best of gods and of men. The brahmins who drink Soma and love Soma, and all the Proshthapada stars protect him.
The full verse, with transliteration and meaning, is on our page of nakshatra mantras. Learn the accents from a teacher or a recording before you recite it.
How to Worship Ahirbudhnya
Start with the name mantra above. Chant it on the days the Moon passes through Uttara Bhadrapada, which happens about once every 27 days.
Those trained in Vedic recitation can add the Nakshatra Suktam verse or the Rig Veda verses quoted earlier. Use the accents taught in your own tradition. Rig Veda 7.35.13 suits people born in either Bhadrapada nakshatra, since it calls on both deities together.
Offering water fits his old link with the waters. Shiva worship also reaches him, as a Rudra. Vaishnavas can approach him through Sudarshana worship, the subject of his own Samhita.
All of this works on the mind. Regular chanting and quiet reflection help a person meet the depth of this nakshatra with patience. For a reading of your own Moon nakshatra and running dasha, you can book a Vedic astrology consultation.
A Gayatri-style mantra for Ahirbudhnya also circulates online. We could not trace it to any classical text, so it is left out here.
Ahirbudhnya Temple
We could not find a major temple dedicated to Ahirbudhnya alone. As a Rudra, he receives worship in Shiva temples.
The temple most often named for Uttara Bhadrapada (Uthirattadhi in Tamil) is the Sahasra Lakshmeeswarar Temple at Theeyathur. It stands in Avudayarkoil taluk of Pudukkottai district, Tamil Nadu. It is a Shiva temple, with Sahasra Lakshmeeswarar as the main deity and Periyanayaki as the goddess.
Temple tradition says that a sage named Ahir Budhan was born under this star, along with Angirasa and Vishvakarma. The belief is that they still worship here on the star day each month. People born in Uttara Bhadrapada visit on their star day, at least once a year.
Frequently Asked Questions
Is Ahirbudhnya a form of Shiva?
Yes. He is one of the 11 Rudras, and the Puranas treat the Rudras as forms of Shiva. The thousand names of Shiva in the Mahabharata include Ahirbudhna, and the Ahirbudhnya Samhita also presents him as Shiva.
Is Ahirbudhnya a Naga?
He has a serpent form and a serpent name. The texts, from the Rig Veda to the Puranas, place him among the Vedic gods and the Rudras.
What is the mantra of Ahirbudhnya?
The name mantra is Om Ahirbudhnyaya Namah (ॐ अहिर्बुध्न्याय नमः). The Vedic verse for him is the Uttara Bhadrapada verse of the Nakshatra Suktam, which begins "Ahirbudhniyah prathamana eti."
Who is the deity of Purva Bhadrapada?
Aja Ekapada, the one-footed goat, rules Purva Bhadrapada. The Rig Veda often names him together with Ahirbudhnya.
What is the Ahirbudhnya Samhita about?
It is a Pancharatra text on the worship of Sudarshana, the discus of Vishnu, and it also teaches yoga, ritual and mantra.
Which planet rules Uttara Bhadrapada Nakshatra?
Saturn rules it. The nakshatra falls fully in Pisces, so Jupiter, the lord of Pisces, also shapes it through the sign.
Summary
Ahirbudhnya is the serpent of the deep and the deity of Uttara Bhadrapada. The Rig Veda names him with the waters and with his partner Aja Ekapada, and the Puranas count him among the Rudras. His Samhita makes him the teacher of Sudarshana worship.
In a chart, his nakshatra gives patience and endurance under Saturn. Chant Om Ahirbudhnyaya Namah on the Uttara Bhadrapada star day, or recite his Nakshatra Suktam verse, as a simple way to work with it.
