Bhagavatapurana 10.59.3

10.59.3

sa-bhāryo garuḍārūḍhaḥ prāg-jyotiṣa-puraṃ yayau /
giri-durgaiḥ śastra-durgair jalāgny-anila-durgamam /
mura-pāśāyutair ghorair dṛḍhaiḥ sarvata āvṛtam //

3. The city was impregnable with hill fortifications, fortifications of weapons, water, fire, air and strong and fearful wires of Mura on all sides.

2. His mother deprived of her ear-rings, himself of his umbrella and turned out from his place, i. e., Amaradri, Indra complained to Krishna of the troublesome activity of Narakasura: [Govinda comforted Indra and sent him away with due respect:] and with His wife Govinda mounted Garuda and proceeded to city of Pragjyotisha.