Siddhars sought after siddhi of body and soul through affection, yoga methods, through the help of mecurial beads, medicine and mantras and they were said to have achieved deathlessness. The mantra used in relation to them denotes the eight yogic methods ( asthanga yogam ).They are :
The first three stages, Yamam, Niyamam and Asanam, are external practices. The next two, Pranayamam and Prathiyakaram, pertain to the practice of respiration and control of mind. Hence they are called inner or internal practices. The last three stages, Dharanai, Dhyanam and Samadhi speak about the life force / Jeewa Athma / Soul which tries to unite itself with the Paramathma / Supreme Soul. Hence these three are called inner Athma practice or Antharathma practice.
The details about these eight steps or stages of yoga are well explained in Thirumular’s Thirumanthiram, in Chapters Samathi patham, Sathana patham and Viputhi patham
By the practice of Yoga, one can raise the serpent power / kundalini from mulatharam – a place in the lower part of spinal cord and consume the elixir of life / madhi amudhu secreted in the central portion of the head. By this practice, one achieves the goal of self realization which is the ultimate goal of human being on the earth plane.
According Mystics, the aim of every spiritual seekers is to attain Peace or Peranandam, by following the disciplines prescribed by our Siddantha or Vedantha Shastras. Just as a river eventually joins the ocean, every individual who has come from Total-Self (Almighty), must ultimately merge with the Total Self. Once this happens, there is no insecurity, unhappiness, worry and anxiety but total joy. One of the best means or sadhanas to achieve this is by practising Classical Yoga of Ancient Mystics from both North India (Vedanta Yoga) and South India ( Siddhanta Yoga ).