Matsya Purana — Navagraha Sacrifice for Planetary Pacification and Prosperity
यस्मादशून्यं शयनं केशवस्य च सर्वदा शय्या ममाप्यशून्यास्तु दत्ता जन्मनि जन्मनि //
yasmādaśūnyaṃ śayanaṃ keśavasya ca sarvadā śayyā mamāpyaśūnyāstu dattā janmani janmani //
Since Keśava’s couch is never left vacant at any time, may my own bed too never be left empty—may it be granted to me, birth after birth.
It does not address pralaya directly; it expresses a devotional boon—continuous auspiciousness and service connected with Keśava’s ever-occupied divine resting-place.
For a householder, an “unempty bed” implies sustained household welfare—companionship, continuity of family life, and stable domestic fortune—framed as a blessing obtained through Vaiṣṇava devotion and observance of vows.
Ritually, it reflects the symbolism of śayyā (bed/couch) as an auspicious object and a devotional offering motif; architecturally it is indirect—pointing to household auspiciousness rather than prescribing specific Vāstu measurements.