Shiva Purana
आस्थायैवं हि शक्रस्य स्वरूपं परमेश्वरः ॥ जगामानुग्रहं कर्तुमुपमन्योस्तदाश्रमम् ॥ ११ ॥
Assuming the form of Indra, lord Śiva went to the hermitage of Upamanyu in order to bless him.
english translation
AsthAyaivaM hi zakrasya svarUpaM paramezvaraH ॥ jagAmAnugrahaM kartumupamanyostadAzramam ॥ 11 ॥
hk transliteration by Sanscript