Shloka 25
Vyaktāvyakta-Viveka and Nivṛtti as Paramā Gati
Manifest–Unmanifest Discrimination and the Supreme Path of Withdrawal
पुरुषाधिछितान् भावान् प्रकृति: सूयते यदा । हेतुयुक्तमत: पूर्व जगत् सम्परिवर्तते
puruṣādhiṣṭhitān bhāvān prakṛtiḥ sūyate yadā | hetuyuktam ataḥ pūrvaṁ jagat samparivartate ||
毗湿摩说道：当自然本原（Prakṛti）生出由灵我（Puruṣa）所主宰的种种状态与形相时，正是自然本原独自塑成那由灵我之作用所构想的万般事物。由此自然本原，世界首先连同其因果秩序而生；其后，宇宙便在循环的变易中运行不息。
भीष्म उवाच
Educational Q&A
The verse presents a Sāṅkhya-style account: the conscious principle (puruṣa) provides superintendence/intent, while prakṛti is the productive power that actually manifests the world. The universe arises with an intelligible causal structure (hetuyukta) and then continues through cyclical transformations.
In the Śānti Parva’s instruction on dharma and liberation, Bhīṣma explains to Yudhiṣṭhira the metaphysical basis of creation—how prakṛti, under the presiding presence of puruṣa, produces the manifold world and how that world proceeds through ongoing cycles of change.