Answer

In Jain Dharma, the 8th fast is commonly called Attham Tap.

It means observing a fast for three continuous days, traditionally without food, and in stricter forms, without water as well.

Explanation

The word Attham is connected with the idea of the eighth meal being given up.

In the traditional Jain meal-counting method:

• One day has two main eating times.
• Fasting across three days means giving up six meals.
• Along with the previous and next meal discipline, it is understood as giving up the eighth meal.

So, Attham generally refers to a three-day fast.

Spiritual Understanding

Attham Tap is practiced for:

• Reducing attachment to the body and taste
• Strengthening self-control
• Purifying karma
• Deepening devotion, meditation, and inner awareness

Takeaway

The 8th fast in Jain practice is Attham, a three-day fast observed with discipline, devotion, and spiritual focus.