Matsya Purana — Śrāddha Procedure: Types
यज्ञोपवीती निर्वर्त्य ततः पर्युक्षणादिकम् प्राचीनावीतिना कार्यम् अतः सर्वं विजानता //
yajñopavītī nirvartya tataḥ paryukṣaṇādikam prācīnāvītinā kāryam ataḥ sarvaṃ vijānatā //
یَجْنوپَویت کو یَجْنوپَویتی حالت میں درست کر کے، پھر پَریُکْشَṇ وغیرہ اعمال کرے؛ مگر یہ سب ‘پراچیناوِیت’ حالت میں کرنے کے لائق ہیں—یہ بات مکمل وِدھی جاننے والا سمجھتا ہے۔
This verse is not about pralaya; it focuses on correct ritual procedure—specifically the proper wearing of the sacred thread during different steps of a rite.
It reinforces the dharmic duty of performing rites with procedural accuracy; a householder (and by extension a king who upholds dharma) must observe correct yajñopavīta/prācīnāvīta conventions during sanctifying actions like paryukṣaṇa.
The ritual significance is the regulated shift in sacred-thread position: begin in yajñopavīta, then perform paryukṣaṇa and related acts in prācīnāvīta—an important procedural marker for correctness and purity in worship/rites.