In Jainism, the Ashta Vidarshana Mantra (more commonly known as Ashta Prakari Puja or the Eightfold Offering) refers to the eight substances offered during the worship (puja) of a Tirthankara’s idol. While there isn't a single mantra called "Ashta Vidarchana Mantra" in traditional Jain texts, devotees often recite specific mantras or prayers (such as Namokar Mantra) while offering these eight items.

The eight offerings (Ashta Prakari) are:

1. Jal (Water)
2. Chandan (Sandalwood paste)
3. Pushpa (Flowers)
4. Dhup (Incense)
5. Deep (Lamp)
6. Akshat (Rice)
7. Naivedya (Sweet food)
8. Phal (Fruits)

Common Practice

During the Ashta Prakari Puja, devotees may recite the Namokar Mantra or individual shlokas dedicated to each offering. Here is an example of shlokas recited for each offering:

1. Jal (Water)

``` Om arham jalam samarpayami ```

1. Chandan (Sandalwood paste)

``` Om arham chandanam samarpayami ```

1. Pushpa (Flowers)

``` Om arham pushpam samarpayami ```

1. Dhup (Incense)

``` Om arham dhupam samarpayami ```

1. Deep (Lamp)

``` Om arham deepam samarpayami ```

1. Akshat (Rice)

``` Om arham akshatam samarpayami ```

1. Naivedya (Sweet food)

``` Om arham naivedyam samarpayami ```

1. Phal (Fruits)

``` Om arham phalam samarpayami ```

Explanation

• Each offering symbolizes a virtue (like purity, steadfastness, etc.) and is made with devotion towards the Tirthankara.
• The recitation of mantras or shlokas during the offering is meant to purify the devotee’s mind and cultivate spiritual qualities.

If you want a more detailed or specific Sanskrit version, please let me know!