ज्येष्ठ-कनिष्ठ-धर्मः — Duties of Elders and Juniors
Anuśāsana-parva 108
नक्तं न कुर्यात् पित्र्याणि भुक्त्वा चैव प्रसाधनम्
naktaṁ na kuryāt pitryāṇi bhuktvā caiva prasādhanam
قال بهيشما: «لا تُقام طقوسُ البِتْرِ (الأجداد) ليلًا؛ وبعد الطعام كذلك لا يُشرَع في تهيئة الشعائر ولا في أعمال التطهير الطقسي».
भीष्म उवाच
Ritual acts—especially ancestral rites—must be performed at proper times and in a state of appropriate purity; night-time performance and post-meal ritual preparation are discouraged as contrary to prescribed discipline.
In Anuśāsana Parva, Bhishma instructs Yudhishthira on dharma and correct conduct, giving practical rules about śrāddha/Pitṛ-related observances and standards of cleanliness and timing.