Matsya Purana — Prayaga Mahatmya Begins: Yudhishthira’s Remorse
अचिरेणैव कालेन मार्कण्डेयो महातपाः सम्प्राप्तो हास्तिनपुरं राजद्वारे ह्यतिष्ठत //
acireṇaiva kālena mārkaṇḍeyo mahātapāḥ samprāpto hāstinapuraṃ rājadvāre hyatiṣṭhata //
Before long, the great ascetic Mārkaṇḍeya arrived at Hāstinapura and stood waiting at the king’s gate.
This verse does not describe Pralaya directly; it sets a narrative scene by introducing the sage Mārkaṇḍeya arriving at a royal capital, typically as a prelude to instruction, prophecy, or dharmic counsel.
By placing a great ṛṣi at the king’s gate, the verse implies the royal duty of honoring and receiving sages—hospitality (satkāra), reverence to tapasvins, and readiness to hear dharma—core expectations of righteous kingship in Purāṇic ethics.
The explicit detail is the “rājadvāra” (royal gate), highlighting the palace/city threshold as a formal point of audience and reception; while not a Vāstu rule itself, it reflects the institutional space where ritualized hospitality and court protocol occur.