Matsya Purana — Manvantaras
यद्यदिष्टतमं द्रव्यं न्यायेनैवागतं च यत् तत्तद्गुणवते देयम् इत्येतद्दानलक्षणम् //
yadyadiṣṭatamaṃ dravyaṃ nyāyenaivāgataṃ ca yat tattadguṇavate deyam ityetaddānalakṣaṇam //
Whatever substance is most dear to oneself, and whatever has been obtained by rightful means—this should be given, just as it is, to a worthy person of good qualities: this is the defining mark of true charity (dāna).
This verse does not address pralaya or cosmology; it defines ethical charity (dāna) as giving what is dear and honestly acquired to a worthy recipient.
It sets a standard for rājadharma and gṛhasthadharma: wealth used for charity should be earned through lawful means, and gifts should be directed to qualified, virtuous recipients rather than given indiscriminately or from unjust gains.
No specific Vāstu or temple-building rule is stated; however, the principle supports ritual propriety—offerings and donations connected with yajña, temple service, or consecrations should be pure in acquisition and given to deserving persons.