Shiva Purana
॥ ऋषिरुवाच ॥ आसीच्छुम्भासुरो दैत्यो निशुंभश्च प्रतापवान् ॥ त्रैलोक्यमोजसा क्रान्तं भ्रातृभ्यां सचराचरम् ॥ १ ॥
The sage said:— There was a Daitya Śumbha and another equally powerful Niśumbha. The three worlds including mobile and immobile beings were attacked by the two brothers.
english translation
॥ RSiruvAca ॥ AsIcchumbhAsuro daityo nizuMbhazca pratApavAn ॥ trailokyamojasA krAntaM bhrAtRbhyAM sacarAcaram ॥ 1 ॥
hk transliteration by Sanscript