Matsya Purana — Sādhāraṇa Śrāddha: General Ancestral Rite
अवनेजनपूर्वं तु नामगोत्रेण मानवः गन्धधूपादिकं दद्यात् कृत्वा प्रत्यवनेजनम् //
avanejanapūrvaṃ tu nāmagotreṇa mānavaḥ gandhadhūpādikaṃ dadyāt kṛtvā pratyavanejanam //
After first performing the purificatory washing (avanejana), a person should, while pronouncing the name and gotra, present offerings such as fragrance and incense; having done so, he should then perform the counter-washing (praty-avanejana) as the concluding purification.
This verse does not address Pralaya; it focuses on dharmic ritual procedure—purification by washing and correct offering protocol using name and gotra.
It frames a householder-style obligation: rites should be performed with purity (avanejana), correct identity markers (nāma-gotra), and disciplined completion (pratyavanejana), reflecting orderly dharma expected of all social roles, including rulers.
The significance is ritual (not architectural): it prescribes the sequence—initial purification, offering gandha/dhūpa and related items with name-and-gotra recitation, then a concluding purification.