Mahabharata — Shanti Parva, Shloka 13
अध्याय ३२३ — श्वेतद्वीपगमनम्, यज्ञभाग-विवादः, एकान्तिभक्त्या नारायणदर्शन-नियमः (Śvetadvīpa Journey; Dispute over Sacrificial Share; Rule of Nārāyaṇa-vision through Single-minded Devotion)
योगेनात्मानमाविश्य योगधर्मपरायण: । धारयन् स तप्स्तेपे पुत्रार्थ कुरुसत्तम
yogena ātmānam āviśya yogadharmaparāyaṇaḥ | dhārayan sa tapas tepe putrārtha kuru-sattama ||
毗湿摩说道：他以瑜伽摄持自我，令其融入至上者；专志于瑜伽之法与戒律，持久而专注地修苦行。噢，俱卢中最卓越者，他所求者乃得一子之福。
भीष्म उवाच
Educational Q&A
Yoga is presented as an ethical discipline (yogadharma) requiring steadiness (dhāraṇā) and inner absorption, and it can be directed toward legitimate life-goals when pursued with restraint and right intention rather than ego or display.
Bhīṣma describes a figure undertaking concentrated austerities, immersing the mind in the Supreme through yoga, with the specific purpose of obtaining a son—linking spiritual practice to a dharmic household aspiration.