Indrani — Seventh Matrika — Indra's shakti
No primary scriptures are catalogued for this entry yet. If you know of scriptural references we have missed, please contribute them.
The Aṣṭa Mātṛkā — the Eight Mother-Goddesses — are a set of female deities who stand to the major male gods as their śakti, their active power. Indrāṇī is the śakti of Indra, king of the devas, and she is the one of the eight who most plainly inherits her male counterpart's name, attributes and retinue. She rides the elephant Airāvata, Indra's vāhana, and she carries his thunderbolt.
The set is not a random list. Each Mātṛkā is the female face of a named god, and the group as a whole is what the Tantric and Śākta traditions use to represent the whole of divine power in one image. When the eight are set in a ring around a shrine, or carried around a central deity, the gesture is not decorative: it is a claim that the masculine powers of the cosmos are never acting alone.
How the eight are constituted is not settled, and this entry will not pretend otherwise. At least two problems sit underneath the familiar list.
First, there is a seven in the tradition as well as an eight. A list of seven mothers appears in the Mahābhārata in connection with the attendants of Sati, and the pairing of a seven with an eight recurs. Second, the membership and the order of the eight differ between texts. The lists you will meet include Brahmā, Indra, Sūrya, Soma, Agni, Varṇa and Gaurī in one arrangement, and a differently-ordered eight in the later Śākta and Tantric material, in which fierce forms appear. An older text's own entry was confident that the group "originated as a Seven Mātṛkā in Kushan iconography" and that a particular eighth was "added in Tantric elaboration". That is a reconstruction by modern scholarship, it may well be right, and it is not a fact. It has been rewritten here as a question.
What is archaeologically solid is the presence of Mātṛkā imagery in early sculptural programmes, including Kushan-period reliefs, where mother-goddesses appear in rows as attendants and as a protective surround. The interpretation of these rows — as a defensive ring, as a set of the eight, or as a different number — varies with the period and the site. Indrāṇī's vāhana, the elephant, is the practical means of telling her apart in a row: she is the one on the elephant.
Collectively, the Mātṛkās are approached in the Śāradīya-Navaratrī cycle, in which they are given form, housed, fed, clothed and returned — the kalas-sthana ceremony, in which a pot of grain is installed and becomes the mothers' dwelling for nine nights. Individually, they appear in tantric ritual as the matṛkā-nyāsa, the seeding of the letters of the alphabet with the goddesses, which is the most technical use and the one with the least public documentation. Indrāṇī in particular has no large single shrine of her own in most regions; she is worshipped as a member of a set.
The Śākta scriptural frame is the Devī Māhātmya within the Mārkandeya Purāṇa, and the early seven is the Anuśasana-parva. The archaeological material should be checked against published excavation reports rather than summary, and the "seven to eight" development against a specialist study of Mātṛkā iconography, which this entry lacks and flags.
