From Hindupedia, the Hindu Encyclopedia
By Swami Harshananda
Abhāva-yoga is literally translated as 'yoga of negation’.
Some Saiva schools of philosophy describe five kinds of yoga, one of which is abhāva-yoga. In this state, the fourth yogic plane is to be ascended. The yogi transcends from the world appearance in its various forms. He is not concerned with the world. To him, village or town is like the place where goblins live (known as the ‘paisācapada’). He goes to inaccessible places like mountain tops or thick jungles to practice this kind of yoga.
- The Concise Encyclopedia of Hinduism, Swami Harshananda, Ram Krishna Math, Bangalore