Shasta (deity)

Shasta (IAST Śāstā) is the name of a Hindu deity in Hinduism. Shasta is a generic Sanskrit term for a ruler. The one who rules/preaches. The word "Shasta" was first used in the sense of a Hindu deity in South India during the 3rd century. He is identified with many deities like Aiyanar, Ayyappa and Revantha as he is also called as Brahma Shastha, preacher of Pranav am. According to Tamil literature, Shasta has eight important forms. The details about this deity has been researched and the book Maha Sastha vijayam in Tamil, written by V Aravind Subramanyam, published in the year 2009, give us numerous details of the lord.
Significance.
"Shasta" is a generic term that means "Teacher, Guide, Lord, Ruler" in Sanskrit. In South India, a number of deities are associated with Shasta. The Tamil song "Shasta Varavu" states that there are eight important incarnations and forms of Shasta. This is also present in the agamic work "Dyana Ratnavali". The "Ashta-Shasta" (eight Shastas) are "Aadhi Maha Shasta", "Dharma Shasta" (Ayyappan), "Gnana Shasta", "Kalyana Varadha Shasta", "Sammohana Shasta", "Santhana Prapti Shasta", "Veda Shasta" and "Veera Shasta". "Brahma Shasta" is another term associated with Kartikeya.
Tamil Nadu.
In Tamil Nadu, Aiyanar is used as another name of the deity "Shasta". The earliest reference to "Aiynar-Shasta" is from the Arcot district in Tamil Nadu. The stones are dated to the 3rd century C.E. They read "Ayanappa; a shrine to Cattan." This is followed by another inscription in Uraiyur near Tiruchirapalli which is dated to the 4th century C.E.
Literary references to "Aiyanar-Cattan" are found in Silappatikaram, a Tamil work dated to the 4th to 5th centuries C.E. The Tamil sangam classics Purananuru, Akananuru etc. refer to ayyanar and "cattan" in many poems. There are several numerous references to sasta in sangam works.Some Tamil inscriptions of sangam times and also of the later pallava and chola period coming in from various parts of the empire refer to him as sevugan and mahasasta. The hymns of some alwars like tirumangai alwar and nammalwar in temples like tirumogur near madurai refer to sasta. A Sanskrit work dated prior to the 7th century known as Brahmanda Purana mentions "Shasta" as harihara suta or son of Siva and Narayana (Vishnu). There are references in puranas that narrate as to how sasta during his tenure on earth long ago conducted discourses on vedas and vedantas to a galaxy of gods and sages. Later on the Saivite revivalist Appar sang about "Shasta" as the progeny of Shiva and tirumaal (Vishnu) in one of his Tevarams in the 7th century. The child saint tirugnanasambandar in one of his songs praises ayyanar as celibate god, invincible and terrible in warfare, taking his abode alongside bhootaganas of Lord Siva. The place sanctity and history document or sthalapuranam of tiruvanaikkaval, a saivite temple near trichy, which was first documented by sage kasyapa informs us that sasta once served lord sivan at that site and after being blessed with a vision was instructed by lord to take abode in the outer sanctorum. It says that sasta continues to worship lord during the day of tiruvadirai. Adi sankara also has referred to ayyanar in sivanandalahari in one verse . Some ancient hagiographies have accounted that sri sankara was a "deivamsam"(divine soul portion) of sree sasta("sevugan"), the same way as tirugnana sambandar was a divine portion of skanda and sundarar a divine portion of alalasundarar.He is also known to have composed verses praising the deity but the same are not available to us as of today. From the Chola period (9th century C.E) onwards the popularity of "Aiyanar-Shasta" became even more pronounced as is attested by epigraphy and imagery.
Kerala.
The Shasta religious tradition is particularly well developed in the state of Kerala. The earliest inscription to "Shasta" was made in 855 C.E. by an Ay King at the Padmanabhapuram Sivan temple. Independent temples to "Shasta" are known from the 11th century C.E. Prior to that, "Shasta" veneration took place in the temples of Shiva and Vishnu, the premier gods of the Hindu pantheon. Since late medieval times, the warrior deity Ayyappa's following has become very popular in the 20th century.
See also.
Nurani, a village in Palakkad, Kerala, noted for its Sastha devotion.