In Nandavrat (and similar tapas) there is no fixed “shastra‑rule” that you must count only in one particular hand‑method. Counting on the hand is just a simple aid to remember your number of ayambils/upvās etc.

A very common, easy method:

1. Decide what you are counting

– e.g. “How many days completed?” or “How many ayambil today?”

1. Use finger‑segments (phalanges)

- Each finger (except thumb) has 3 segments. - 4 fingers × 3 segments = 12 counts on one hand. - You lightly touch each segment with your thumb: - Index finger: 3 segments = 1–3 - Middle finger: 3 segments = 4–6 - Ring finger: 3 segments = 7–9 - Little finger: 3 segments = 10–12

1. For more than 12

- Use the other hand (or a small counter/beads) for “tens” or “sets of 12”. - Example: left hand counts 1–12 as above; right hand thumb shows how many 12s (or tens) are done.

1. Main Jain point

- Whatever method you use, the important thing in Nandavrat is: - correct pachchakhan (vow), - ahimsa, - proper timing/food rules, - and doing it under guidance of your own guru / sangh’s maryādā. - Hand‑count is only a memory tool, not the essence of the vrat.

If your local guru or pravartak has shown a specific hand‑method for Nandavrat, always follow that.