Naraka is the realm of existence in Jain cosmology characterized by great suffering. Naraka is usually translated into English as "hell" or "purgatory". Naraka differs from the hells of Abrahamic religions as souls are not sent to Naraka as the result of a divine judgment and punishment. Furthermore, the length of a being's stay in a Naraka is not eternal, though it is usually very long—measured in billions of years. A soul is reborn into a Naraka as a direct result of his or her previous karma, and resides there for a finite length of time until his karma has achieved its full result. After his karma is used up, he may be reborn in one of the higher worlds as the result of an earlier karma that had not yet ripened.
Types of hells
These realms are situated in the seven lower levels of the universe while the human abode of Jambudvip is in the middle and the heavenly realms exist above. These layers together, form the shape of a man with arms akimbo, with the human realm of Jambudvip at the waist, adho lok below, urdhva lok above, and siddha lok or siddhashila at or above the head. Many Jain temples are built to display this cosmology such Jambudvip in Hastinapur and the fifteen story Trilok Teerth Dham temple in Uttar Pradesh. The seven lower grounds are:
Ratna prabha.
Sharkara prabha.
Valuka prabha.
Panka prabha.
Dhuma prabha.
Tamaha prabha.
Mahatamaha prabha.
The first ground, owing to a predominance of ratnas or jewels, is called Ratnaprabha. Similarly, the second, owing to a predominance of sarkara or gravel, is called Sarkraprabha. The third owing to a predominance of valuka or sands, is called Valukaprabha. The fourth, owing to an excess of panka or mud, is called Pankaprabha. The fifth, owing to an excess of dhuma or smoke, is called Dhumaprabha. The sixth, owing to a marked possession of tamas or darkness, is called Tamahprabha, while the seventh, owing to a high concentration of mahatamas or dense darkness, is called Mahatamahprabha.
Hellish beings
The hellish beings are a type of soul which reside in these various hells. They are born in hells by sudden manifestation. The hellish beings each possess a vaikriya body. They have a fixed life span in the respective hells where they reside. The minimum life span of hellish beings in the first to seventh hellish grounds is 10000 years, 1 sagaropama year, 3 sagaropama years, 7 sagaropama years, 10 sagaropama years, 17 sagaropama years and 22sagaropama years respectively. The maximum life span of hellish beings in the first to sixth hellish grounds is 1 sagaropama year, 3 sagaropama years, 7 sagaropama years, 10 sagaropama years, 17 sagaropama years and 22 sagaropama years respectively. They experience five types of sufferings: bodily pain, inauspicious leśyā or soul colouring and pariṇāma or physical transformation, from the nature and location of hells, pain inflicted on one other and torture inflicted by mansion-dwelling demi-gods.
Causes of birth in Hell
In a dialogue between Sudharma Swami and Mahavira in the Jain textSutrakritanga, Mahavira speaks of various reasons a soul may take birth in hells: According to Jain scripture, Tattvarthasutra, following are the causes for birth in hell:
Killing or causing pain with intense passion.
Excessive attachment to things and worldly pleasure with constantly indulging in cruel and violent acts.
In a dialogue between Sudharma and Mahavira the Jain text Sutrakritanga, Mahavira describes various tortures and sufferings in hells: In Hell beings have a life span of innumerable years and are not easily killed even though they endure great torture. Even if they are killed they immediately take birth and are then repeatedly killed. This is described as thus: