In my reading I came across the word siddha and nitya siddha. By now I should know what this word means, but still…I wanted some clarification. So I went to Vani Quotes and did a search. One of the best definitions I could find came from the following letter to Mukunda dasa:
Letter to Mukunda
by His Divine Grace A. C. Bhaktivedanta Swami Prabupada
New Vrindaban 10 June, 1969
…Your next question, whether the Spiritual Master was formerly a conditioned soul, actually a bona fide Spiritual Master is never a conditioned soul. There are three kinds of liberated persons. They are called 1) sadhan siddha, 2) kripa siddha, and 3) nitya siddha. Sadhan siddha means one who has attained perfection by executing the regulative principles of devotional service. Kripa siddha means one who has attained perfection by the special mercy of Krishna and the Spiritual Master, and nitya siddha means one who was never contaminated. The symptoms of nitya siddha is that from the beginning of his life he is attached to Krishna, and he is never tired of rendering service to Krishna. So we have to know what is what by these symptoms. But when one is actually on the siddha platform there is no such distinction as to who is sadhan, kripa, or nitya siddha. When one is siddha, there is no distinction what is what. Just like when the river water glides down to the Atlantic Ocean nobody can distinguish which portion was the Hudson River or some other river. Neither is there any necessity to make any such distinction. Actually, every living entity is eternally uncontaminated, although he may be in the material touch. This is the version of the Vedas. Asanga ayam purusha—the living entity is uncontaminated. Just like when there is a drop of oil in water you can immediately distinguish the oil from the water, and the water never mixes with the oil. Similarly, a living entity, although in material contact, is always distinct from the matter.
This was an amazing answer. For more on the meaning of nitya siddha More
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