........ ASHTAMA SIDDHI
Saiva siddhantham speaks of four steps in spiritual progress. They are Sarya(work to others) Kriya,Yoga,and Gnana. These four saiva Acharyas, Thirunavukkarasar (Appar), Thirugnanasambandhar, Sundharar, Manickavasagar, are supposed to represent these four methods.The Thevaram and Thiruvasagam which comprise the first eight books of the Thirumurai constitue the bedrock of saivism. The lives of the four great Acharys form part of their songs and consititute a unified lesson and inspiration for the saivites and their philosphy....In saiva religion, siddhars are numerous, a siddhar is one who has attained siddhi from lord, siddhi is "power, prowess, strength, ability", then a special kind of psychic and supernatural, miraculous, occult power. There are eight kinds of super natural powers called as "Ashtama Siddhis".
Ashtama Siddhis which is believed to confer eight kinds of devises and super natural powers on those who have achieved it.
Eight Major Siddhis
An accomplished, Purnayogi in the path of Kundalini Yoga is in possession of eight major Siddhis, viz., Anima, Mahima, Laghima, Garima, Prapti, Prakamya, Vasitvam and Ishitvam.
The Yogi can become as minute as he pleases.
This is the opposite of Anima. He can become as big as he likes. He can make his body assume a very large size. He can fill up the whole universe. He can assume a Virat Svarupa.
He can make his body as light as cotton or feather. Vayustambhanam is done through this Siddhi. In Jalastambhanam also the power is exercised to a very small degree. The body is rendered light by Plavini Pranayama. The Yogi produces a diminution of his specific gravity by swallowing large draughts of air. The Yogi travels in the sky with the help of this Siddhi. He can travel thousands of miles in a minute.
This is the opposite of Laghima. In this the Yogi acquires an increase of specific gravity. He can make the body as heavy as a mountain by swallowing draughts of air.
The Yogi standing on the earth can touch the highest things. He can touch the sun or the moon or the sky. Through this Siddhi the Yogi attains his desired objects and supernatural powers. He acquires the power of predicting future events, the power of clairvoyance, clairaudience, telepathy, thought-reading, etc. He can understand the languages of the beasts and birds. He can understand unknown languages also. He can cure all diseases.
He can dive into the water and can come out at any time he likes. The late Trilinga Swami of Benares used to live for six months underneath the Ganges. It is the process by which a Yogi makes himself invisible sometimes. By some writers it is defined to be the power of entering body of another (Parakaya Pravesh). Sri Sankara entered the body of Raja Amaruka of Benares. Tirumular in Southern India entered the body of a shepherd. Raja Vikramaditya also did this. It is also the power of keeping a youth-like appearance for any length of time. Raja Yayati had this power.
This is the power of taming wild animals and bringing them under control. It is the power of mesmerising persons by the exercise of will and of making them obedient to one’s own wishes and orders. It is the restraint of passions and emotions. It is the power to bring men, women and the elements under subjection.
It is the attainment of divine power. The Yogi becomes the Lord of the universe. The Yogi who has this power can restore life to the dead. Kabir, Tulsidas, Akalkot Swami and others had this power of bringing back life to the dead.