Answer

If someone is doing Upvas, you can respectfully say:

• “Jai Jinendra. Bahu saras bhav chhe.”
• “Tamari tapasya safal thay.”
• “Shubh Upvas.”
• “Aapni tapasya thi atma ni shuddhi vadhe.”

In English, you can say:

• “Jai Jinendra. Wishing you strength and peace in your Upvas.”
• “May your tapasya be spiritually fruitful.”
• “Shubh Upvas.”

Spiritual Understanding

In Jain Dharma, Upvas is not just fasting from food. It is a form of tapasya meant for self-control, inner purity, and reducing attachment to the body and taste.

So instead of only saying “good luck,” it is better to wish them:

• spiritual strength,
• peaceful thoughts,
• atma-shuddhi,
• and successful tapasya.

Takeaway

A simple and respectful phrase is:

“Jai Jinendra. Tamari tapasya safal thay.”