Pañcastikayasara, or the essence of reality, is a Jain text by Kundakunda is part of his trilogy, known as the prahbrta-traya or the nataka-traya. Kundakunda explains the Jain concepts of Ontology and Ethics. Jainism recognises the five astikayas, jiva (soul), pudgala (matter), dharma (medium of motion), adharma (medium of rest),and akasa (space).
It is said that Kundakunda composed the Pañcastikayasara for sankseparuci students. Hence, the work serves as a brief version of the Jaina doctrine.