Answer

On the 4th day of Ayambil Oli, devotees usually perform Ayambil tap with devotion, simplicity, and inner purification.

If you mean which Jin temple or Jain place to visit on the 4th day, there is no single universally fixed place required for all Jains. You may visit:

• A nearby Jin Mandir
• A Upashray / Sthanak for pravachan or samayik
• A place where Ayambil Oli aaradhana is being organized

Explanation

Ayambil Oli is a sacred Jain observance performed for spiritual purification. On each day, devotees practice restraint in food, speech, thoughts, and conduct.

On the 4th day, you can focus on:

• Doing Ayambil properly according to your tradition
• Performing Samayik
• Doing Pratikraman
• Listening to Jain pravachan
• Reciting Navkar Mantra
• Offering devotion at a Jin Mandir

Spiritual Understanding

The purpose of Ayambil Oli is not only visiting a place, but reducing attachment to taste, increasing self-control, and purifying the soul through tap, bhakti, and right conduct.

Takeaway

For the 4th day of Ayambil Oli, visit a Jin Mandir or Upashray if possible, and spend the day in simplicity, devotion, restraint, and awareness of the soul.