Three experiences

Three experiences (Tib. nyam sum; Wyl. nyams gsum) — three types of 'positive' meditation experiences mentioned in the Dzogchen and Mahamudra traditions. They are:

1. bliss (Wyl. bde ba'i nyams),
   
2. clarity (Wyl. gsal ba'i nyams), and
   
3. absence of thoughts (Wyl. mi rtog pa'i nyams).
   

Sogyal Rinpoche writes:
As you continue to practise [[[meditation]]], you may have all kinds of experiences (Tib. nyam), both good and bad. Just as a room with many doors and windows allows the air to enter from many directions, in the same way, when your mind becomes open, it is natural that all kinds of experiences can come into it. You might experience states of bliss, clarity or absence of thoughts.

In one way these are very good experiences, and signs of progress in meditation.
*For when you experience bliss, it’s a sign that desire has temporarily dissolved.
*When you experience real clarity, it’s a sign that aggression has temporarily ceased.
*When you experience a state of absence of thought, it’s a sign that your ignorance has temporarily died.

By themselves they are good experiences, but if you get attached to them they become obstacles. Experiences are not realization in themselves; but if we remain free of attachment to them, they become what they really are, that is, materials for realization.

Furthermore, it is said that being attached to these kinds of experience causes the practitioner to be further reborn in samsara—in places devoid of any opportunity to practise the Dharma, respectively:

• attachment to the experience of bliss can lead to a rebirth in one of the six heavens of the desire realm, or in the preta realm;
  
• attachment to the experience of clarity can lead to a rebirth in the heavens of the form realm, and
  
• attachment to the experience of absence of thought can lead to a rebirth in the heavens of the formless realm, or in the animal realm.

Source

www.rigpawiki.org