Skandapurana 5.279.87

5.279.87

88 aṃbāvṛddhetyabhidhābhyāṃ kāśīrājabhāryāyāṃ patināśottaraṃ tatraiva purarakṣārthaṃ vāsaka-raṇam, tata ekasmātkuṇḍādgajavaktrāśvamukhyādidevatānāṃ samutpattiṃ dṛṣṭvā tatkṛtaja-natrāsanivāraṇārthaṃ tāsāṃ tadbhakṣaṇīyapadārthasya tābhyāmaṃbāvṛddhābhyāṃ vyavasthākaraṇam, tataḥ svanāmnā hāṭakeśvare liṃgasthāpanam, aṃbāvṛddhāmāhātmyavarṇanam...... 95 1

88 The two wives of the King of Kāśī named Ambā and Vṛddhā dwell right there after their husband's death in order to protect the city; then, seeing the emergence from a single pool of the deities Gajavaktrā, Aśvamukhī, and others, those two, Ambā and Vṛddhā, make arrangements for their food in order to avert the terror caused by them to the people; then, the establishment of a liṅga under their own names at Hāṭakeśvara; the description of the majesty of Ambāvṛddhā ..... 95 1