Answer

Generally, upvas gives more punya and greater tapas than aambil in Jain Dharma.

Explanation

• Upvas means complete fasting for the prescribed time, so it is considered a stronger form of tapa.
• Aambil is also a respected austerity, but it is usually less intense than upvas.
• However, in Jainism, punya is not judged only by the external act. It also depends on:

- your bhav or inner intention, - your faith and sincerity, - your capacity, - and whether the austerity is done with humility and right understanding.

So:

• If someone does upvas with pure bhav, it is generally more meritorious.
• If someone does aambil sincerely, it also gives punya and spiritual benefit.

Spiritual Understanding

In Jain Dharma, the main aim is not just punya, but karma reduction and spiritual purification. A stronger tapa like upvas helps in:

• controlling desires,
• weakening attachment,
• increasing self-discipline,
• and advancing toward moksha.

At the same time, aambil is also a beautiful practice when done with devotion and discipline.

Takeaway

If comparing the two, upvas is generally considered greater than aambil. But the real value lies in sincere bhav, right intention, and one’s own ability.