Arihant (Jain Prakrit: arihant, Sanskrit: árhat "conqueror") is a jiva (soul) who has conquered inner passions such as attachment, anger, pride and greed. Having destroyed four inimical karmas, they realize pure self. Arihants are also called kevalins (omniscient beings) as they possess kevala jnana (pure infinite knowledge). An arihant is also called a jina ("victor"). At the end of their life, arihants destroy remaining karmas and attain moksha (liberation) and become siddhas. Arihantas have a body while siddhas are bodiless pure spirit. The Ṇamōkāra mantra, the fundamental prayer dedicated to Pañca-Parameṣṭhi (five supreme beings), begins with Ṇamō arihantāṇaṁ, "obeisance to the arihants".
According to Jains, every soul has the potential to become an arihant. A soul which destroys all kashayas or inner enemies like anger, ego, deception, and greed, responsible for the perpetuation of ignorance, becomes an arihant.
According to Jain texts, omniscience is attained on the destruction of four types of karmas– deluding, the knowledge-obscuring, the perception-obscuring and the obstructive karmas, in the order mentioned. The arihants are said to be free from the following eighteen imperfections:
In Jainism, omniscience is said to be the infinite, all-embracing knowledge that reflects, as it were in a mirror, all substances and their infinite modes, extending through the past, the present and the future. According to Jain texts, omniscience is the natural attribute of the pure souls. The self-attaining omniscience becomes a kevalin.
Those arihants who re-establish the Jain faith are called tirthankaras. Tirthankaras revitalize the sangha, the fourfold order consisting of male saints (sādhus), female saints (sādhvis), male householders (śrāvaka) and female householders (srāvika).
Jain texts mention forty-six attributes of arihants or tirthankaras. These attributes comprise four infinitudes (ananta chatushtaya), thirty-four miraculous happenings (atiśaya), and eight splendours (prātihārya).
At the time of nirvana (final release), the arihant sheds off the remaining four aghati karmas:
These four karmas do not affect the true nature of the soul and are therefore called aghati karmas.
In the Ṇamōkāra mantra, Namo Arihantanam, Namo Siddhanam, Jains worship the arihants first and then to the siddhas, even though the latter are perfected souls who have destroyed all karmas but arihants are considered to be at a higher spiritual stage than siddhas. Since siddhas have attained ultimate liberation, they probably are not directly accessible but may be through the wisdom they passed on. However arihants are accessible for spiritual guidance of human society until their nirvana. The Dravyasaṃgraha, a major Jain text, states:
Having destroyed the four inimical varieties of karmas (ghātiyā karmas), possessed of infinite faith, happiness, knowledge and power, and housed in most auspicious body (paramaudārika śarīra), that pure soul of the World Teacher (Arihant) should be meditated on.