अव्यक्त–पुरुष–विवेकः (Discrimination of Avyakta/Prakṛti and Puruṣa) — Yājñavalkya’s Anvīkṣikī to Viśvāvasu
स्थाणुवच्चाप्यकम्प: स्याद् गिरिवच्चापि निश्चल: । बुद्धवा विधिविधानज्ञास्तदा युक्तं प्रचक्षते
sthāṇuvaccāpy akampaḥ syād girivaccāpi niścalaḥ | buddhvā vidhividhānajñās tadā yuktaṃ pracakṣate, mithileśvara |
स्थाणुवच्चाप्यकम्पः स्याद् गिरिवच्चापि निश्चलः। यदा मनसा इन्द्रियाणि निगृह्य, बुद्ध्या मनः स्थिरीकृत्य पाषाण इव निश्चलः, काष्ठवत् निष्कामः, गिरिवत् दृढः भवति, तदा विधिविधानज्ञा मनीषिणः स्वानुभवेन तं युक्तं प्रचक्षते, मिथिलेश्वर।
वसिष्ठ उवाच
True Yoga is recognized as inner integration and steadiness: the senses are gathered under the mind, and the mind is stabilized by the intellect. When one becomes unshaken, desireless, and firmly established—like a pillar or mountain—scripturally trained sages acknowledge that state as being ‘yukta’ (yoga-established).
Vasiṣṭha is instructing the king of Mithilā (Janaka) on the marks of an accomplished yogin. Using vivid similes (pillar, stone, dry wood, mountain), he describes the experiential criteria by which knowledgeable sages recognize genuine yogic establishment.