Short answer: Yes—ripe banana is generally allowed in Paryushan. It is a non‑root fruit and, in most Jain maryadas, falls under “simple, ahimsak foods.”

How to take it properly

• Eat only in daylight, within your fixed time; no eating after sunset.
• Wash well, check for insects, cut fresh, and consume immediately.
• Avoid overripe/infested fruit.

When it may be avoided

• If you have taken stricter vows (upvās, ayambil, boiled‑food‑only), follow those; they may exclude fruits.
• If your sangh/family observes “no shak” (no vegetables) or “no fresh produce” during the 8 days, then avoid bananas too.
• Raw banana used as a vegetable (sabzi) is sometimes avoided where all “shak” is given up during Paryushan.

Tradition notes

• Shwetambar (8 days): Typically no root and no leafy greens; fruits like banana are generally permitted unless a stricter tyāg is taken locally.
• Digambar (Das‑Lakshan, 10 days): Discipline is often equal or stricter; fruits are usually fine unless your declared vrata says otherwise.

For simple allowed/avoid lists during Paryushan and Chaturmās, see:

• Allowed foods in Paryushan
• Edible fruits list (includes banana) during Chaturmās
• What not to eat in Paryushan

Essence: Keep food minimal, non‑violent, and pure; if in doubt, follow your guru and your declared vows.