Shloka 138
ज्येष्ठ-कनिष्ठ-धर्मः — Duties of Elders and Juniors
Anuśāsana-parva 108
अनायुष्यं दिवा स्वप्न तथाभ्युदितशायिता । प्रगे निशामाशु तथा नैवोच्छिष्टा: स्वपन्ति वै
anāyuṣyaṃ divā svapnaḥ tathābhyuditśāyitā | prage niśām āśu tathā naivocchiṣṭāḥ svapanti vai ||
Dijo Bhīṣma: Dormir durante el día, y asimismo recostarse después de la salida del sol, disminuye la duración de la vida. No debe dormirse al alba, ni al comienzo de la noche. Los de conducta recta no duermen por la noche permaneciendo impuros (sin haberse purificado tras comer).
भीष्म उवाच
Educational Q&A
Bhishma teaches disciplined daily conduct: avoid daytime sleep and sleeping after sunrise, do not sleep at dawn or at the start of night, and maintain bodily/ritual cleanliness—especially not sleeping at night while ‘ucchiṣṭa’ (uncleansed after eating).
In the Anushasana Parva’s instruction on dharma and proper conduct, Bhishma continues giving Yudhishthira practical ethical guidance (ācāra) about daily routines—here, specifically regulating sleep and emphasizing purity.