The first Tirthankar in Jainism is Lord Rishabhanatha, also known as Adinath. His life and teachings are described in various Jain scriptures, including the Kalpa Sūtra and the Ādi Purāṇa.

Story of Lord Rishabhanatha (Adinath):

Rishabhanatha was born in Ayodhya to King Nabhi and Queen Marudevi. He belonged to the Ikshvaku dynasty. His birth is considered highly auspicious, and many auspicious signs appeared at the time of his birth. Queen Marudevi is said to have seen 14 (or 16, in some texts) auspicious dreams, which indicated the birth of a great soul.

Rishabhanatha grew up to become a wise and just king. He is credited with teaching people various arts and skills necessary for civilized living, such as agriculture, pottery, writing, and other crafts. Before his time, people lived a simple, primitive life. Because he introduced these skills, he is also called the one who laid the foundation for the social order.

After ruling for many years and fulfilling his worldly duties, Rishabhanatha decided to renounce the world in search of spiritual knowledge. He distributed his kingdom among his sons—Bharata and Bahubali being the most prominent. He then adopted asceticism, practicing severe penance and deep meditation.

After a long period of spiritual practice, Rishabhanatha attained Kevala Jnana (omniscience), the highest form of knowledge. He then spent the rest of his life teaching the path of right faith, right knowledge, and right conduct (Ratnatraya) to his followers, guiding them towards liberation (moksha).

Rishabhanatha attained moksha on Mount Ashtapada (believed to be Mount Kailash by some traditions). He is revered as the first Tirthankar, the "Ford-maker," who established the Jain Sangha (community) and showed the way to spiritual liberation.

Key Points about Lord Rishabhanatha:

• First Tirthankar of Jainism.
• Born in Ayodhya to King Nabhi and Queen Marudevi.
• Taught society various arts and skills.
• Renounced worldly life after fulfilling his duties.
• Attained Kevala Jnana (omniscience).
• Attained moksha on Mount Ashtapada.
• His symbol is the bull.

His life exemplifies the ideals of renunciation, non-violence (ahimsa), and spiritual upliftment, which are central to Jain philosophy.