Matsya Purana — Rite and Layout for Consecrating Ponds
उदङ्मुखो दक्षिणतो यजमान उपाविशेत् यजध्वमिति तान्ब्रूयाद् धौत्रिकान्पुनरेव तु //
udaṅmukho dakṣiṇato yajamāna upāviśet yajadhvamiti tānbrūyād dhautrikānpunareva tu //
Facing north, the sacrificer (yajamāna) should sit down on the southern side; and he should again address the officiating priests, saying, “Perform the sacrifice.”
This verse does not discuss Pralaya; it focuses on practical yajña protocol—where the yajamāna sits and how he formally prompts the priests to proceed.
It reflects the yajamāna’s duty (whether king or householder) to uphold dharma through correctly conducted sacrifice—observing prescribed orientation, seating, and formally commissioning the officiants.
Ritually, it specifies directional orientation (north-facing) and placement (southern side), showing how space and direction are integral to yajña performance—key for setting up the ritual ground and priestly positions.