Nitainam Lekhan for Harinam Ruchi is done by SLOWLY writing the ten Devanagari strokes of “निताइ” (Nitainam) one by one in the air in LARGE size with your index finger. This writing is done in the sequence shown by the stroke numbers and white arrows in the above image. While airwriting it, don’t visualize your moving index finger, but MINUTELY visualize the SHAPE of each stroke, which REMAINS in the air due to the persistence of vision after your index finger has moved forward and a little away from it after writing it. IN THIS WAY, clearly visualize each stroke one at a time in your mind with closed eyes, or in the air with open eyes.
You can do it for at least 5-10 minutes by your right index finger before or after Harinam, or with your left index finger during Harinam japa. You can also rest your elbow on any surface while doing it if needed. You may meditate on the transcendental meanings of each stroke as you do it, and optionally merge those meanings with Harinam if you do it with Harinam.