In Jain context, Navanu usually refers to Navanu Yatra or Navanu Jatra at Shatrunjaya Hill, Palitana. It is a devotional Jain pilgrimage in which a devotee climbs the hill 99 times. It is considered a form of strong tapasya, prayaschit, and deep devotion toward Lord Adinath and the Tirthankars. ( jainknowledge.com)

Main details

• Meaning: “Navanu” means 99. ( jainknowledge.com)
• Place: Shatrunjaya Hill, Palitana, Gujarat. ( jainknowledge.com)
• Practice: The devotee ascends, does darshan/puja, descends, and repeats this until 99 ascents are completed. ( jainknowledge.com)
• Purpose: Spiritual purification, penance, and devotion; it is not a compulsory Jain rule but a voluntary austerity. ( jainknowledge.com)
• Duration: It is often completed in a few days, but can be done according to one’s health and capacity. ( jainknowledge.com)
• Discipline: Many devotees observe fasting, restraint, and strict Jain conduct during the yatra. ( jainknowledge.com)

Important note

This is a highly revered but optional spiritual practice, not a daily or mandatory vow for all Jains. It is traditionally associated with deep श्रद्धा, self-discipline, and devotion. ( jainknowledge.com)

If you want, I can also give you the step-by-step way Navanu is done in simple Jain language.