ज्येष्ठ-कनिष्ठ-धर्मः — Duties of Elders and Juniors
Anuśāsana-parva 108
संध्यायां च न भुज्जीत न स्नायेन्न तथा पठेत् । प्रयतश्न॒ भवेत् तस्यां न च किंचित् समाचरेत्,संध्याकालमें स्नान, भोजन और स्वाध्याय कुछ भी न करे। उस बेलामें शुद्ध चित्त होकर ध्यान एवं उपासना करनी चाहिये। दूसरा कोई कार्य नहीं करना चाहिये
saṃdhyāyāṃ ca na bhuñjīta na snāyen na tathā paṭhet | prayataś ca bhavet tasyāṃ na ca kiṃcit samācaret ||
Bhishma said: At the time of twilight (saṃdhyā), one should not eat, nor bathe, nor even engage in study/recitation. In that sacred interval one should remain self-restrained and purified in mind, devoted to contemplation and worship, and should not undertake any other activity.
भीष्म उवाच