There is no practice as such but perfect understanding is needed.

 There is no practice as such but perfect understanding is needed. Deeper inquiry, analysis and reasoning revels the fact that, the self is not physical but the self is formless consciousness.  Therefore, all the accumulated knowledge, experiences and understanding based on physical self [ego or body as Self] are falsehood based on the false self, within the false experience [waking]. Thus, whatever is based on the waking entity is bound to be falsehood because waking experience itself is false hood. Since many teachers and teachings are based on the false self [ego or body as Self] and they consider the false experience (three states) as reality, they are incapable of grasping the witness, which is within the three states, but it is without the three states.

Thus, the formless knower of the three states has to be grasped mentally and realize the fact that, all the three states, which comes and goes, are mental. They are impermanent. The formless witness or knower of the three states is permanent and eternal. Therefore, there is a need to understand “What is Mind?” and “What is the substance of the Mind?” in order to understand and assimilate the non-dual truth. –FORMLESS PATH