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Dravyasamgraha
Jainas, Astikāyas. It is evident that material objects constituted by physical molecules have such space quality. Jīva or soul is also considered to be an Astikāya because of its organic nature. Jīva exists as an organism and as such it is related to body and hence the spatial quality. Dharma and Adharma are the peculiar principles recognized by Jainas as corporeal. These are also Astikāyas. One is the principle of motion, the other is the principle of rest. They are pervading space and as such are Astikāyas. It is not necessary to point out that Space is a multidimensional existence. Jainas have recognized the reality of Space...
...Since Time has neither potentiality nor really the possibility of such space relations it is denied the name Astikāya. It is purely an entity of monodimensional series. Though it is not Astikāya it does not cease to be a real entity.
Chakravarti Nayanar, A., Ācārya Kundakunda's Pañcāstikāya-Sāra, p. 2-3.
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