Short answer: In Digambar Paryushan (Das Lakshana), eating outside food is generally not allowed. You should eat only foods prepared in a pure Jain kitchen, typically at home or in a Jain temple setting, and finish eating before sunset. After sunset, most Digambar practices observe chauvihār (no food or water) or a very minimal vow, depending on one’s specific discipline. If travel, illness, or extreme difficulty arises, a guru or senior monk may grant a very simple, pure meal under strict guidelines, but this is not the default.

Key points:

• Eat only food prepared in a pure Jain kitchen, ideally at home or in a temple, and avoid restaurant or packaged outside food.
• Consume meals during daylight and finish before sunset.
• After sunset, typically no food (and often no water) unless a stricter or alternative vow has been taken.
• Always follow the guidance of your local guru or sangh, as practices can vary between Digambar and Shwetambar communities and by region.

You can read more here and