I think you mean “Chaudas Upvaas” or “Chauvihar/Upvas during Udyapan/Udham”, but the term “clary Udham” is not clear.

Answer

In Jain practice, the general rule is:

• If you are doing Upvas, you do not eat for the whole day.
• If you have taken Chauvihar, you should not eat or drink after sunset.
• If it is related to a specific tap, vrat, or udyapan, the exact timing should be followed according to your Jain tradition and your Guruji’s guidance.

Explanation

In many Jain practices, food restrictions depend on the specific vow:

• Navkarsi – eating only after a certain time after sunrise.
• Porsi – eating after a longer fixed period after sunrise.
• Upvas – no food for the day.
• Chauvihar – no food or water after sunset.

Takeaway

Please confirm what you mean by “clary Udham”—is it Chauvihar, Upvas, Udyapan, or a specific Jain tap? Then I can answer more accurately.