Shiva Purana
स वृद्धब्राह्मणो भूत्वा ब्रह्मचारी शचीपतिः ॥ जगाम तत्र विप्रेन्द्र परीक्षार्थं हि तस्य वै ॥ ३९॥
O leading brahmin, Indra, the lord of Śacī, assumed the form of an elderly brahmin bachelor and went there to test him.
english translation
sa vRddhabrAhmaNo bhUtvA brahmacArI zacIpatiH ॥ jagAma tatra viprendra parIkSArthaM hi tasya vai ॥ 39॥
hk transliteration by Sanscript