Shiva Purana

siva.sh/siva-purana/uma-samhita/37/8

इंद्रस्य युवनाश्वस्तु श्रावस्तस्य प्रजापतिः।। जज्ञे श्रावस्तकः प्राज्ञः श्रावस्ती येन निर्मिता।। श्रावस्तस्य तु दायादो बृहदश्वो महायशाः ।। ८ ।।

sanskrit

Indra’s son was Yuvanāśva, the ruler of Śrāvasta. His son was Śrāvastaka who built Śrāvasti. Śrāvastaka’s son was Bṛhadaśva.

english translation

iMdrasya yuvanAzvastu zrAvastasya prajApatiH|| jajJe zrAvastakaH prAjJaH zrAvastI yena nirmitA|| zrAvastasya tu dAyAdo bRhadazvo mahAyazAH || 8 ||

hk transliteration by Sanscript