Matsya Purana — Vrata-Ṣaṣṭhī: The Sixty Sacred Vows
संध्यादीपप्रदो यस्तु समां तैलं विवर्जयेत् समान्ते दीपिकां दद्याच् चक्रशूले च काञ्चने //
saṃdhyādīpaprado yastu samāṃ tailaṃ vivarjayet samānte dīpikāṃ dadyāc cakraśūle ca kāñcane //
Whoever regularly offers a lamp at twilight (sandhyā) should avoid using oil (taila) for a full year. At the end of the year, he should offer a small lamp made of gold, bearing the emblems of the discus (cakra) and the trident (śūla).
This verse is not about Pralaya; it focuses on ritual discipline in dīpadāna (lamp-offering), prescribing what should be avoided and what should be offered at the completion of a yearly observance.
It frames a householder-style vrata: maintain regular twilight lamp-offering, observe purity/discipline regarding lamp oil across the year, and complete the observance with a prescribed donation—showing how daily piety culminates in formal dāna.
Ritually, it specifies dīpadāna procedure and completion (samānte) with a gold lamp marked by chakra and trident—iconic emblems that sacralize the offering and connect it to divine protection and auspiciousness.