Shiva Purana

siva.sh/siva-purana/rudra-samhita/106/25

तावदिन्द्रस्समायातस्ततोऽपि द्विगुणप्रभः ।। सर्वामरवरो नानादिव्यभस्त्रिदिवेश्वरः ।। २५ ।।

sanskrit

Then came Indra, the most important of all the gods, the lord of the three worlds, endowed with divine refulgence and who had twice the splendour of Isāna.

english translation

tAvadindrassamAyAtastato'pi dviguNaprabhaH || sarvAmaravaro nAnAdivyabhastridivezvaraH || 25 ||

hk transliteration by Sanscript