Answer

After Varshitap, one of the biggest and most difficult Jain tapas is generally considered Vardhaman Tap.

Explanation

Varshitap is a long tapas where one typically does alternate-day fasting for about one year.

Vardhaman Tap is considered very difficult because the number of fasts gradually increases step by step. It requires strong discipline, physical capacity, mental steadiness, and deep spiritual devotion.

Other major tapas in Jain tradition include:

• Masakshaman – fasting continuously for one month
• Atthai – fasting for eight days
• Navpad Oli – Ayambil for nine days
• Ayambil Oli – a very important tapas performed with simple, tasteless food

Spiritual Understanding

In Jain Dharma, the greatness of tap is not only measured by duration or difficulty. Its true value depends on:

• Purity of intention
• Reduction of attachment
• Control over passions
• Humility and devotion
• Progress toward self-purification

Takeaway

Vardhaman Tap is commonly regarded as one of the biggest tapas after Varshitap, but spiritually, the best tap is the one done with right faith, humility, and inner purity.