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Universe and its Substances
Dravya -
The Permanent Characteristics / qualities of a
Substance is known as Dravya of a Substance. Paryäya -
Every substance continuously going through Origination and Destruction. This is known as Transient Characteristics or Modification of a Substance also known as Paryäya. While going through continuous changes, certain qualities of a substance remains unchanged is known as substance. Dravya and Parväva are inseparable.