Matrikas (Sanskrit: मातृका (singular), IAST: mātṝkās, lit. "divine mothers") also called Matar or Matri, are a group of mother goddesses who are always depicted together in Hinduism. The Matrikas are often depicted in a group of seven, the Saptamatrika(s) (Seven Mothers). However, they are also depicted as a group of eight, the Ashtamatrika(s). In the Brihat Samhita, Varahamihira says that "Mothers are to be made with cognizance of (different major Hindu) gods corresponding to their names." They are associated with these gods as their spouses or their energies (Shaktis). Brahmani emerged from Brahma, Vaishnavi from Vishnu, Maheshvari from Shiva, Indrani from Indra, Kaumari from Skanda, Varahi from Varaha and Chamunda from Devi. and additionals are Narasimhi from Narasimha and Vinayaki from Ganesha. Originally believed to be a personification of the seven stars of the star cluster the Pleiades, they became quite popular by the seventh century and a standard feature of goddess temples from the ninth century onwards. In South India, Saptamatrika worship is prevalent whereas the Ashtamatrika are venerated in Nepal, among other places. The Matrikas assume paramount significance in the goddess-oriented sect of Hinduism, Tantrism. In Shaktism, they are described as "assisting the great Shakta Devi (goddess) in her fight with demons." Some scholars consider them Shaiva goddesses. They are also connected with the worship of warrior god Skanda. In most early references, the Matrikas are associated with the conception, birth, diseases and protection of children. They were seen as inauspicious and the "personification of perils", propitiated in order to avoid those ills, that carried off so many children before they reached adulthood. They come to play a protective role in later mythology, although some of their early inauspicious and wild characteristics continue in these legends. Thus, they represent the prodigiously fecund aspect of nature as well as its destructive force aspect. Origins and development Matris or Matrikas originated from the sweat of lord Shiva who chased the demons away from heaven when the later invaded heaven after defeating devas. According to Jagdish Narain Tiwari and Dilip Chakravati, the Matrikas were existent as early as the Vedic period and the Indus Valley civilization. Seals with rows of seven feminine deities or priestesses are cited as evidence for the theory. The Rigveda (IX 102.4) speaks of a group of seven Mothers who control the preparation of Soma, but the earliest clear description appears in select chapters of the epic