The karmic matter that covers the soul is called karmic body. It changes every moment because new karma is continuously attached to the soul due to activities of body, mind, and speech. At the time of death, the soul is accompanied by this body for the next birth. The karmic body along with tejas body forms the basis of the other newly produced audaric body. It also provides the fruits of living being's past action when due.
Aharac body is very small in size.
These souls put on this body to travel far distant places. It is said that Achaurya Shri Kunda Kunda possessed Aharac body. With this body he visited Shri Srimandhar Swami, the present Tirthankara of the Mahavideha Kshetra. He removed his doubt about soul and matter substances. Vaikriya body - This body can be obtained by human being by practicing yoga, meditation, etc.