In Jainism, "Astottari Pooja" (also spelled as "Ashtottari Pooja") refers to a devotional ritual that involves offering worship with 108 (ashta-ottara) names or attributes of a Tirthankara, usually Lord Mahavira or Lord Parshvanatha, or sometimes other deities revered in Jain tradition.

Astottari Pooja Kriya (Procedure):

1. Preparation:

- Cleanse yourself with a bath and wear clean clothes. - Prepare the puja area with an idol or image of the Tirthankara or deity. - Arrange puja items such as rice, flowers, sandalwood paste, akshat (uncooked rice mixed with turmeric), fruits, and incense.

1. Prayers and Invocation:

- Begin with the recitation of the Namokar Mantra. - Offer salutation to Panch Parmeshthi (Arihant, Siddha, Acharya, Upadhyaya, Sadhu).

1. Sankalp (Resolution):

- Make a mental resolve to perform the Astottari Pooja sincerely for spiritual upliftment.

1. Recitation of 108 Names:

- Recite the 108 names (Astottara Shata Namavali) of the chosen Tirthankara or deity. - With each name, offer akshat (rice), a flower, or sandalwood paste at the feet of the idol or image.

1. Offerings:

- After each name, you may also offer light (deep), incense (dhup), fruit, or sweets as per tradition. - Maintain focus and devotion during each offering.

1. Puja Aarti:

- Conclude the pooja by performing aarti with a lamp and singing devotional hymns (stavan or stuti).

1. Prayers and Bhavnas:

- End with prayers for forgiveness (Kshamapana) and for the welfare of all living beings (Sarva Mangal).

1. Distribution of Prasad:

- Distribute the prasad (sanctified offerings) among the family and devotees.

Common Astottari Namavali:

• For Lord Mahavira: “Shri Mahavir Ashtottara Shat Namavali”
• For Lord Parshvanath: “Shri Parshvanath Ashtottara Shat Namavali”

Purpose: Performing Astottari Pooja is an act of devotion and gratitude, meant to cultivate virtues, seek inspiration from the Tirthankaras, and progress spiritually by remembering their qualities.

Note: Texts and specific procedures may vary by Jain sect (Svetambara/Digambara) and local customs. You may refer to a Jain puja book or consult a knowledgeable Jain monk or scholar for the exact 108 names and detailed steps as practiced in your tradition.