In Jainism, the term "Upadan" (उपादान) generally refers to the "material cause" or the substance out of which something is made. It is an important concept in Jain philosophy, especially in discussions about the nature of reality (dravyas) and causation.

Explanation:

• Upadan Karana (Material Cause): In Jain ontology, every effect arises from a cause. The Upadan is the underlying substance or material that transforms into a particular effect. For example, in the making of a pot, clay is the Upadan (material cause), while the potter’s action is the "Nimitta" (instrumental cause).
• Application in Jain Philosophy: Jains believe that all changes and modifications in the universe happen through the transformation of substances (dravya) which serve as the Upadan. The concept emphasizes the eternal and indestructible nature of substances—they only modify their modes (paryaya) but do not get destroyed.
• Spiritual Context: Sometimes, Upadan also refers to the internal dispositions or tendencies (bhavas) that become the basis for karma bondage or spiritual progress.

Key Points:

• Upadan = Material cause or basis.
• Essential in understanding how things come into existence and change within the Jain view of reality.
• Differentiated from Nimitta (instrumental or efficient cause).
• Applies both to physical substances and, in a spiritual sense, to internal causes for karma.

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