Valmiki Ramayana Bala Kanda Sarga 45 Shloka 20
Original Shlokaउत्पपाताग्निसङ्काशं हालाहलमहाविषम्। तेन दग्धं जगत्सर्वं सदेवासुरमानुषम्।।1.45.20।।
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अग्निसङ्काशम् resembling fire, हालाहलमहाविषम् virulent venom known as HalaHala, उत्पपात was sprung up, तेन by that, सदेवासुरमानुषम् with devatas, asuras, mortals, सर्वम् entire, जगत् world, दग्धम् was burnt.
Therefrom was produced halahala, virulent venom resembling fire.The entire universe consisting of devatas, asuras and mortals was burnt down.