Siddha

Siddha (Skt.; = Tib. drubt’ob). Person who has acquired SIDDHI; especially applied to the Tantric practitioners of India from the 8th to 12th centuries.

In the Hindu philosophy of Kashmir Shaivism (Hindu tantra), siddha refers to a Siddha Guru who can by way of Shaktipat initiate disciples into Yoga.

A Siddham in Tamil means "one who is accomplished" and refers to perfected masters who, according to Hindu belief, have transcended the ahamkara (ego or I-maker), have subdued their minds to be subservient to their Awareness, and have transformed their bodies (composed mainly of dense Rajotama gunas) into a different kind of Body dominated by sattva. This is usually accomplished only by persistent meditation.

According to Jain beliefs, Siddhas are liberated souls who have destroyed all the Karma bondings. Siddha do not have any kind of Body, they are soul at its purest form.

They reside in Siddha-shila which is situated at the top of the Universe.

A siddha has also been defined to refer to one who has attained a Siddhi.

The Siddhis as paranormal abilities are considered emergent abilities of an individual that is on the path to siddhahood, and do not define a siddha, who is established in the Pranav or Aum – the spiritual substrate of creation.

The Siddhi in its pure form means "the attainment of flawless identity with Reality (Brahman); perfection of Spirit."

Siddha or Siddhar (Tamil tradition)

In Tamil Nadu, South India, a siddha (see Siddhar) refers to a being who has achieved a high degree of physical as well as spiritual perfection or Enlightenment.

The ultimate demonstration of this is that siddhas allegedly attained physical immortality.

Thus siddha, like siddhar or cittar (indigenisation of Sanskrit term in Tamil Nadu) refers to a person who has realised the goal of a type of sadhana and become a perfected being. In Tamil Nadu, South India, where the siddha tradition is still practiced, special individuals are recognized as and called siddhas (or siddhars or cittars) who are on the path to that assumed perfection after they have taken special secret rasayanas to perfect their bodies, in order to be able to sustain prolonged meditation along with a form of pranayama which considerably reduces the number of breaths they take.

The well known 18 siddhars are listed below.

The head of all siddhars is Sri Kagapujandar

    Patanjali's
    Agasthyar
    Kamalamuni
    Thirumoolar
    Kuthambai
    Korakkar
    Thanvandri
    Konganar
    Sattamuni
    Vanmeegar
    Ramadevar
    Nandeeswarar (Nandidevar)
    Edaikkadar
    Machamuni
    Karuvoorar
    Bogar
    Pambatti Siddhar
    Sundarandandar

Siddha in Jainism

Siddhas are the liberated souls.

They have completely ended the cycle of birth and Death.

They have reached the ultimate state of salvation.

They do not have any karmas and they do not collect any new karmas. This state of true freedom is called Moksha.

They are formless and have no passions and therefore are free from all temptations.

According to Jains, Siddhas have eight specific characteristics or qualities (8 guñas).

Ancient Tamil Jain Classic 'Choodamani Nigandu' describes the eight characteristics in a beautiful poem, which is given below.

"கடையிலா ஞானத்தோடு காட்சி வீரியமே இன்ப
மிடையுறு நாமமின்மை விதித்த கோத்திரங்களின்மை
அடைவிலா ஆயுஇன்மை அந்தராயங்கள் இன்மை
உடையவன் யாவன் மற்று இவ்வுலகினுக்கு இறைவனாமே"

This means,the soul that has infinite knowledge (Ananta jnāna, கடையிலா ஞானம்), infinite vision or Wisdom (Ananta darshana, கடையிலா காட்சி), infinite Power (Ananta labdhi, கடையிலா வீரியம்), infinite bliss (Ananta Sukha, கடையிலா இன்பம்), without name (Akshaya sthiti, நாமமின்மை), without association to any Caste (Being vitāRaga, கோத்திரமின்மை), infinite Life span (Being Arupa, ஆயுள் இன்மை) and without any change (Aguruladhutaa, அழியா இயல்பு) is God.

Thiruvalluvar in his Tamil book Thirukural refer to the eight qualities of God, in one of his couplet poems.
Siddhashila

Siddhashila as per the Jain cosmology

In Jain cosmology, siddhashila is situated at the very top of universe.

The siddhas (liberated souls who will never take birth again, who have gone above the cycle of Life and Death) go to the siddhashila after being liberated and stays there till infinity.

Siddha is a level of soul above Arihant who possess kevala jñana.

In Hindu cosmology, siddhaloka is a subtle world (loka) where perfected beings (siddhas) take birth. They are endowed with the eight primary Siddhis at birth.

Siddhashrama

In Hindu theology, Siddhashrama is a secret land deep in the Himalayas, where great yogis, sadhus and sages who are siddhas live.

The concept is similar to Tibetan mystical land of Shambhala.

Siddhashrama is referred in many Indian epics and Puranas including Ramayana and Mahabharata. In Valmiki's Ramayana it is said that Viswamitra had his hermitage in Siddhashrama, the erstwhile hermitage of Vishnu, when he appeared as the Vamana avatar. He takes Rama and Lakshmana to Siddhashrama to exterminate the rakshasas who are disturbing his religious sacrifices (i.28.1-20).

Siddha Sampradaya