Shloka 18
Adhyāya 240: Indriya–Manas–Buddhi–Ātman — The Inner Hierarchy and Restraint (इन्द्रिय-मनस्-बुद्धि-आत्म-क्रमः)
पज्चेन्द्रियाणि संधाय मनसि स्थापयेद् यतिः । यदैतान्यवतिष्ठन्ति मन:षष्ठान्यथात्मनि
pañcendriyāṇi saṃdhāya manasi sthāpayet yatiḥ | yadāitāny avatiṣṭhanti manaḥ-ṣaṣṭhāny athātmani, sattva-saṃsevanād dhīro nidrām ucchettum arhati |
毗耶娑说：“出家行者当摄合五根，安置于心。当此诸根——并以心为第六 ——在自性（Ātman）之中安住不动时，坚忍之人由修习萨埵（sattva，清明与纯净），便堪断除睡眠（昏沉）。”
व्यास उवाच
Educational Q&A
Restrain the five senses and stabilize them in the mind; when senses and mind become steady in the Self, cultivating sattva enables one to overcome torpor (sleep) and advance in yogic discipline.
In the didactic setting of Śānti Parva, Vyāsa instructs on inner practice: the renunciant is advised to collect the senses, fix them in the mind, and through sattva-oriented living attain wakeful clarity and self-mastery.