Assertion (A): The jainas follow the practice of worshipping images of tirthankaras.
Reason (R): They denied the existence of a Supreme Being.

Immediately after attaining keval jnana, if a person establishes the four fold religious order of monks, nuns, sravaks (male householder), and sravikas (female householder) is known as Tirthankar. He preaches the Jain philosophy, religion, ethics, conducts to his followers. The only difference between Tirthankara and simple kevali is that the latter does not establish the religious order. He remains in the state of perfect blissful condition for the rest of his life after attaining keval gyan.