Srimad-Bhagavatam: Canto 9 - Chapter 1 - Verse 2

Sanskrit:

नर्मदा भ्रातृभिर्दत्ता पुरुकुत्साय योरगै: ।तया रसातलं नीतो भुजगेन्द्रप्रयुक्तया ॥ २ ॥

ITRANS:

narmadā bhrātṛbhir dattāpurukutsāya yoragaiḥtayā rasātalaṁ nītobhujagendra-prayuktayā

Translation:

The serpent brothers of Narmadā gave Narmadā to Purukutsa. Being sent by Vāsuki, she took Purukutsa to the lower region of the universe.

Purport:

Before describing the descendants of Purukutsa, the son of Māndhātā, Śukadeva Gosvāmī first describes how Purukutsa was married to Narmadā, who was induced to take him to the lower region of the universe.