The story of Lalitang Naresh is found in the "Trishashti Shalaka Purusha Charitra" ("Lives of Sixty-three Illustrious Persons"), which is a significant Jain text authored by Acharya Hemachandra. Lalitang Naresh is featured in the section concerning the life of Shantinath Bhagwan, the 16th Tirthankara.

In the Trishashti Shalaka Purusha Charitra, specifically in the Shantinatha Charitra (the biography of Shantinath), Lalitang Naresh is depicted as a previous birth (purva janma) of Lord Shantinath. The story explains the deeds and spiritual progress of Lalitang Naresh, which ultimately lead to his rebirth as Shantinath, a Tirthankara.

If you wish to locate this story in published editions:

• Look under the Shantinath Charitra section in the "Trishashti Shalaka Purusha Charitra".
• In the English translation by Helen M. Johnson, this episode appears in Volume 4, Book 7: Life of Shantinatha, where the previous births, including that of Lalitang Naresh, are described in detail.

Summary: The story of Lalitang Naresh is detailed in the "Shantinath Charitra" section of Hemachandra's "Trishashti Shalaka Purusha Charitra," as a previous incarnation of Lord Shantinath.