Adhyāya 240: Indriya–Manas–Buddhi–Ātman — The Inner Hierarchy and Restraint (इन्द्रिय-मनस्-बुद्धि-आत्म-क्रमः)
सत्त्वसंसेवनाद धीरो निद्रामुच्छेत्तुमरहति । विद्वानोंने योगके जो काम, क्रोध, लोभ, भय और पाँचवाँ स्वप्र--ये पाँच दोष बताये हैं उनका पूर्णतया उच्छेद करे। इनमेंसे क्रोधको शम (मनोनिग्रह) के द्वारा जीते, कामको संकल्पके त्यागद्वारा पराजित करे तथा धीर पुरुष सत्वगुणका सेवन करनेसे निद्राका उच्छेद कर सकता है
sattvasaṃsevanād dhīro nidrām ucchettum arhati | vidvān yoge ye kāma-krodha-lobha-bhayaṃ ca pañcamaṃ svapnam—ime pañca doṣāḥ proktās teṣāṃ pūrṇatayā ucchedaṃ kuryāt | teṣu krodhaṃ śamena (manonigrahena) jayet, kāmaṃ saṅkalpatyāgena parājayet; tathā dhīraḥ sattvaguṇasaṃsevanena nidrāyā ucchedaṃ kartum śaknoti ||
Vyāsa said: By cultivating the quality of sattva, a steadfast person becomes fit to cut off sleep. The wise declare that in the discipline of yoga there are five faults—desire, anger, greed, fear, and, as the fifth, dreaming—and one should uproot them completely. Among these, anger is to be conquered by calm self-restraint, desire is to be defeated by abandoning compulsive resolve, and through sustained reliance on sattva the resolute can overcome sleep itself.
व्यास उवाच
Yoga requires uprooting five inner obstacles—desire, anger, greed, fear, and dreaming. Anger is mastered through śama (calm self-restraint), desire through giving up saṅkalpa (compulsive intention), and sleep/torpor through sustained cultivation of sattva.
In the instruction-heavy Shānti Parva, Vyāsa speaks as a teacher, listing psychological impediments to yogic steadiness and prescribing specific counter-practices to overcome them.