Matsya Purana — Yayati and Indra: Counsel on Forbearance and Right Speech
तस्मात्सान्त्वं सदा वाच्यं न वाच्यं परुषं क्वचित् पूज्यान्सम्पूजयेद् दद्यान् नाभिशापं कदाचन //
tasmātsāntvaṃ sadā vācyaṃ na vācyaṃ paruṣaṃ kvacit pūjyānsampūjayed dadyān nābhiśāpaṃ kadācana //
Therefore, one should always speak words of conciliation, and never speak harshly at any time. One should duly honor those who are worthy of honor, give charitably, and never utter a curse—ever.
This verse does not address pralaya; it focuses on ethical discipline—gentle speech, honoring the worthy, charity, and avoiding curses.
It outlines core rajadharma and grihastha-niti: a ruler/householder should maintain social harmony through conciliatory speech, refrain from verbal cruelty, respect elders and the virtuous, practice dana, and avoid destructive speech like cursing.
No direct vastu or temple-ritual rule appears here; the ritual takeaway is behavioral purity—speech ethics and honoring the worthy are treated as dharmic foundations that support all rites and social order.