सत्त्वसंसेवनाद धीरो निद्रामुच्छेत्तुमरहति । विद्वानोंने योगके जो काम
sattvasaṃsevanād dhīro nidrām ucchettum arhati | vidvān yoge ye kāma-krodha-lobha-bhayaṃ ca pañcamaṃ svapnam—ime pañca doṣā uktās teṣāṃ pūrṇatayā ucchedaṃ kuryāt | eṣu krodhaṃ śamena (manonigrahena) jayet, kāmaṃ saṅkalpatyāgena parājayet, tathā dhīraḥ sattvaguṇasaṃsevanena nidrāyā ucchedaṃ kartum arhati ||
Vyāsa said: By cultivating 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; one should eradicate them completely. Among these, anger is to be conquered by calm self-restraint, desire is to be overcome by abandoning compulsive resolve, and the steady-minded, by nourishing sattva, can bring sleep to an end.
व्यास उवाच
Yoga requires removing five obstacles—desire, anger, greed, fear, and dreaming—through specific remedies: anger by śama (mental restraint), desire by giving up binding saṅkalpa (compulsive intention), and dullness/sleep by cultivating sattva.
In the instruction-heavy Shānti Parva, Vyāsa continues a didactic passage on inner discipline, listing common psychological impediments to yogic practice and prescribing practical methods to overcome them.