I think you might be asking about Paran (parva/paranavartan)—the way to break a fast after a day of fasting. Here is simple, traditional guidance rooted in Jain practice for ending a upvas (fast):

• Before breaking the fast: Offer pratikraman (confession/repentance) and a short samayik or stavan. This helps calm the mind and renew commitment to ahimsa and self-control.

• Break the fast gently: Start with something light and non-spicy. Common Jain options for paran after a day of fasting include:

- Fresh fruit (e.g., apple, orange, pomegranate) - Fresh milk or yogurt (if you consume dairy) - Light, non-root foods in small portions (e.g., boiled grains or pressed/strained plant-based foods) - Water or warm herbal tea

• Eat gradually: Do not overeat. Allow the stomach to adjust by eating several small portions over a short period, rather than a large meal at once.

• Avoid certain items initially: For some, it’s preferred to avoid heavy fried foods, spicy items, onions, garlic, and root vegetables right after breaking a fast. If you follow a stricter Digambar/Shwetambar practice, align with your own community guidance.

• Mindful meals: Eat slowly, chew thoroughly, and keep gratitude to Tirthankaras and all living beings in your thoughts. After breaking the fast, you can resume normal meals in the following meals of the day, but continue to eat with restraint.

• Continue post-fast observances: After paran, you may continue with a light day of practice—reading Jain scriptures, performing a short vidhi like bhavna or upvas-related activities, and maintaining ahimsa in thoughts, words, and deeds.

If you meant something different by “par u” (e.g., a specific regional ritual or a different term), please tell me exactly what you mean and I’ll explain precisely according to Jain scriptures.

Relevant Jain knowledge resources: