Matsya Purana — Eclipse-Time Planetary Bath
चन्द्रादित्योपरागे तु यत्स्नानमभिधीयते तदहं श्रोतुमिच्छामि द्रव्यमन्त्रविधानवित् //
candrādityoparāge tu yatsnānamabhidhīyate tadahaṃ śrotumicchāmi dravyamantravidhānavit //
我愿聆听在月食或日食之时所规定的沐浴仪轨——并请详述所需之物、所诵之真言(mantra)及其正当次第。
This verse does not discuss pralaya; it introduces a dharma-ritual topic—purificatory bathing prescribed specifically for lunar and solar eclipses.
It frames eclipse-time conduct as a duty of disciplined life: the householder (and by extension the ruler) should learn the correct materials, mantras, and procedure for prescribed purification rites rather than acting casually during sacred times.
The significance is ritual: it signals an upcoming detailed grahaṇa-snānavidhi—explicitly emphasizing dravya (materials), mantra (recitation), and vidhāna (method), which are core to orthodox ceremonial correctness.