Matsya Purana — Eclipse-Time Planetary Bath
यजमानस्य शिरसि निदध्युस्ते द्विजोत्तमाः ततो ऽतिवाहयेद्वेलाम् उपरागानुगामिनीम् //
yajamānasya śirasi nidadhyuste dvijottamāḥ tato 'tivāhayedvelām uparāgānugāminīm //
Those excellent brāhmaṇas should place it upon the sacrificer’s head; thereafter he should pass the time in observances that continue for the duration of the eclipse.
This verse does not speak about cosmic creation or Pralaya; it gives a practical injunction for correct conduct during an eclipse, emphasizing disciplined observance for the eclipse’s full duration.
As a dharma rule for the yajamāna (often a householder patron), it frames eclipse-time as a protected ritual interval: one should follow Brahmin guidance and maintain prescribed observances rather than treating the period as ordinary time.
The significance is ritual, not architectural: Brahmins place a consecrated item/rite-marker upon the yajamāna’s head, and the yajamāna must sustain the observance throughout the eclipse-time (uparāga-velā).