In the early Vedic tradition , the death god Yama kept two dogs, Syama the Black and Sabala the Spotted, to bring and hold souls in the Purgatory-like afterlife called Naraka. Even the Norse god Odin kept a pair of wolves, Geri and Freki.
The Narakas are the realms of suffering that equate to the Christian hell or, more accurately, to purgatory . If a person is born into one of these realms as a result of bad karma , this is not a permanent punishment - he or she may well be reborn into one of the higher worlds in the next life . Watched over by Yama , judge of the world, the Narakas are not only physical places but also states of consciousness – and symbols of the suffering that can take place during life, as well as after death .
Nii Taka Yama Nobore 1208. (Execute the Hawaii operation on December 8 [Japanese time]).
O Mistress of the kula, because it protects always from absolutely all dangers, such as Yama and (evil) spirits (bhuta), therefore it is called yantra.