Answer

Yes. In Jain Dharma, masturbation during upvas is considered a serious break in the purity of the fast.

An upvas is not only about avoiding food; it is also about controlling the senses, calming passions, and keeping the mind, speech, and body as pure as possible.

Explanation

During upvas, one should especially observe:

• Brahmacharya — celibacy and control over sexual thoughts/actions
• Sanyam — self-restraint
• Indriya-nigrah — control of the senses
• Shuddh bhav — pure inner intention

Masturbation goes against the spirit of brahmacharya and sense-control. So spiritually, the fast becomes disturbed or impure.

Spiritual Understanding

The purpose of upvas is to move closer to the soul and away from bodily desires. If such a mistake happens, do not fall into guilt or hopelessness. Jain Dharma encourages awareness, repentance, and improvement.

You can do:

• Alochana — sincere confession/acknowledgment of the fault
• Pratikraman — repentance and reflection
• Resolve to be more careful in future fasts
• Continue the rest of the day with calmness, purity, and restraint

Takeaway

Physically avoiding food is only one part of upvas. True upvas means staying near the soul through restraint, purity, and awareness. If you made a mistake, repent sincerely and continue your spiritual effort with stronger discipline.