Matsya Purana — Rites for Consecrating and Celebrating Trees
भूतान्भव्यांश्च मनुजांस् तारयेद्द्रुमसंमितान् परमां सिद्धिमाप्नोति पुनरावृत्तिदुर्लभाम् //
bhūtānbhavyāṃśca manujāṃs tārayeddrumasaṃmitān paramāṃ siddhimāpnoti punarāvṛttidurlabhām //
Whoever helps ferry across to safety and higher good human beings—those of the past and those yet to come—numbering as many as trees, attains the supreme spiritual perfection, one that is hard to regain once the cycle of return begins again.
It frames Pralaya-era teaching as a liberation doctrine: the highest fruit is not merely survival through dissolution, but attaining a state beyond punarāvṛtti (return/rebirth) through compassionate deliverance of others.
It elevates social protection into a soteriological duty: a ruler or householder who ‘causes many to cross over’—by protection, charity, guidance, or rescue—earns supreme merit culminating in rare spiritual perfection.
No direct Vastu/temple rule appears; the operative ritual idea is “tāraṇa” (deliverance), a merit-bearing act often linked in Purāṇic ethics with dāna, protection, and guidance rather than construction.