Shiva Purana
इत्थन्ते वर्णितस्तात शिवस्य परमात्मनः ॥ सुरेश्वरावतारो हि सर्वदा सुखदः सताम् ॥ ७६॥
O dear, thus, the incarnation of Śiva the great soul, as Indra has been explained to you. It bestows happiness to the good always.
english translation
itthante varNitastAta zivasya paramAtmanaH ॥ surezvarAvatAro hi sarvadA sukhadaH satAm ॥ 76॥
hk transliteration by Sanscript