Definition - What does Causal World mean?
According to certain schools of yogic philosophy, Self-realization is achieved when a yogi transcends the three realms of existence. These are the material world, the astral world and, finally, the causal world. The causal world is the realm beyond the material and astral worlds. It is the world of thoughts and ideation, where consciousness resides once it has transcended the other two.
Once a yogi's consciousness enters the causal world, they have no need for a gross physical body and become beings of pure light. They have understood that both the physical and astral worlds are simply manifestations of thoughts within the causal world. It is said that someone who has entered the causal world can use their thoughts to do anything someone in the physical world can do. They are only limited by thought itself.
Yogapedia explains Causal World
The causal world is considered to be a blissful realm, transcending even thoughts of heaven. The causal world is sometimes referred to in Hindu teachings as Brahmaloka.
To exist in this plane, a soul will have complete awareness that they are a being of light. Although every other aspect of the self is retained, the manifestation of the physical body and the material environment become insignificant. Consciousness does not need any physical form in this existence.Once someone has transcended the causal plane, they will have broken the cycle of rebirth and karma. In this state of being, they are in complete and eternal union with God, or Brahman.