Jarā-Mṛtyu-anatikrama: Janaka–Pañcaśikha-saṃvāda
Aging and Death Cannot Be Overstepped
गुणानां महदादीनामुत्पत्तिश्व॒ परस्परम् । अधिष्ठानात् क्षेत्रमाहुरेतत्तत् पजचविंशकम्
guṇānāṁ mahad-ādīnām utpattiś ca parasparam | adhiṣṭhānāt kṣetram āhur etat tat pañcaviṁśakam ||
Vasiṣṭha said: The manifest principles—beginning with Mahat and the rest of the guṇas and evolutes—arise through the mutual conjunction of Prakṛti and Puruṣa. Because each serves as the support (adhiṣṭhāna) of the other, this aggregate is called the ‘field’ (kṣetra); thus even the Puruṣa is spoken of as kṣetra within this twenty-fifth principle framework.
वसिष्ठ उवाच
Cosmic manifestation (from Mahat onward) is explained as arising from the association of Prakṛti (material nature) and Puruṣa (conscious witness). Because experience depends on their mutual grounding, the tradition can speak of the whole complex as ‘kṣetra’ (field), even extending the term to Puruṣa in this Sāṅkhya-style, twenty-five-principle account.
In Śānti Parva’s didactic setting, Vasiṣṭha is instructing on philosophical analysis of reality—how the constituents of the world arise and how the ‘field’ of experience is defined—using Sāṅkhya categories to clarify the relation between nature (Prakṛti) and consciousness (Puruṣa).