Matsya Purana — The Greatness of Prayaga and Allied Tirthas
गङ्गायमुनयोर्मध्ये पृथिव्या जघनं स्मृतम् प्रयागं राजशार्दूल कलां नार्हति षोडशीम् //
gaṅgāyamunayormadhye pṛthivyā jaghanaṃ smṛtam prayāgaṃ rājaśārdūla kalāṃ nārhati ṣoḍaśīm //
Between the Gaṅgā and the Yamunā is remembered the “hip” of the Earth—Prayāga, O tiger among kings; it falls short not even by a sixteenth part in excellence.
It does not describe Pralaya directly; instead, it presents a sacred-geography metaphor where Prayāga is compared to a limb of the Earth, emphasizing the tirtha’s cosmic sanctity.
By addressing a king (“rājaśārdūla”), the verse frames pilgrimage and honoring major tirthas like Prayāga as part of righteous conduct—supporting dharma through reverence for sacred sites and river confluences.
The ritual takeaway is the exceptional sanctity of the Gaṅgā–Yamunā confluence at Prayāga; such sangamas are prime locations for snāna (ritual bathing), dāna (charity), and tirtha-observances in Purāṇic practice.