Matsya Purana 153.128

153.128

tataḥ śakra prakupito dānavaṃ prati devarāṭ.
nārāyaṇāstraṃ prayato mumocāsura vakṣasi .. 153.126

In that way, Jambha devoured the army of the Devas and the army and the Devas were quite done up They could not do any thing Indra came to the spot direct on his elephant and without seeing any remedy said to Viṣṇu “O Devadeva! what would be now proper for us? I donot see any way by which we can resist Tell me what you consider best in your judgment Viṣṇu replied—'Indra! It will not be meet for you to abandon the warfare inspite of your being so overwhelmed and horrified You should instantly muster your strength O Indra! the Daitya is now making his mark at me In the meantime, you better remember at once what weapon you will throw Do not be perplexed” Hearing that Indra composed himself and threw Nârâyaṇâstra angrily at the chest of the demon—122 127