Matsya Purana — The Legend of Acchodā: Pitṛloka
धरां तु नास्पृशत्पूर्वं पपाताथ भुवस्तले तिथाव् अमावसुर् यस्याम् इच्छां चक्रे न तां प्रति //
dharāṃ tu nāspṛśatpūrvaṃ papātātha bhuvastale tithāv amāvasur yasyām icchāṃ cakre na tāṃ prati //
But before it could even touch the earth, it fell upon the ground—on that lunar day, the tithi of Amāvāsyā (new moon), toward which it could not fix its intention or take effect as expected.
It signals an abnormal, ominous disruption tied to a specific tithi (amāvāsyā), consistent with Pralaya narratives where natural order and timing become distorted before dissolution events unfold.
By highlighting the importance of tithi and auspicious/inauspicious timing, it indirectly supports the Purana’s ethic that rulers and householders should heed calendrical observances and omens when making decisions, especially during crises.
The direct reference is ritual-calendar based (amāvāsyā tithi), which is significant for scheduling rites (śrāddha, expiations, vrata observances); it does not state a Vastu rule but reinforces the Purana’s emphasis on correct sacred timing.