Matsya Purana 187.13

187.13

āśvāsya sa tu tān sarvvānnarmadā taṭamāśritaḥ.
cintayāmāsa deveśastadvadhaṃ pratimānada! .. 187.12

After thus consoling them, the Lord went to the banks of the Narmadâ and began to devise plans for the destruction of that demon-12