In Paryushan (Paryuṣaṇ), the 5th day is observed differently in the two main Jain traditions:

• Shwetambar (Śvetāmbara): On the 5th day, Mahavira’s Janma Vanchan (birth story) is read as part of the Kalpa Sūtra recitation. This day centers on recalling Mahavira’s life and renewing right faith, vows, and inspiration for the rest of the festival. It is common for sanghs to perform Kalpa Sūtra readings and Swapna Darshan (the 14 dreams of Mata Trishalā) as part of the day’s schedule in many communities. ( jainknowledge.com)

• Digambar: The 5th day marks Sugandh Dashmi (fragrance day) as part of the 10-day Das Lakṣaṇ Parva. It is a day of temple offerings with fragrant powders and a focus on the virtue of fragrance as a symbol of purity and auspiciousness. The Digambar tradition follows ten daily virtues, with Sugandh Dashmi being associated with ritual fragrance and temple devotion. ( jainqq.org)

Simple sense (arth) of the 5th day:

• Shwetambar: Focus on Mahavira’s birth narrative and re-affirmation of faith and vows through Kalpa Sūtra reading and related observances. ( jainknowledge.com)
• Digambar: Focus on fragrance ritual and the continuation of the Dash Lakṣaṇ Parva, emphasizing purity and virtue for the rest of the festival. ( jainqq.org)

If you want quick, day-by-day context for Paryushan (including the 5th day in both traditions), you can read:

• Paryushan Parva overview (general purpose and daily practices) ( jainknowledge.com)
• Specifics of the 5th day in Digambar and Shwetambar observances (Sugandh Dashmi and Janma Vanchan) ( jainqq.org)

You can read more here and here and here