Shiva Purana
रराज भगवान्सोमः शक्ररूपी सदाशिवः ॥ तेनातपत्रेण यथा चन्द्रबिंबेन मन्दरः ॥ १० ॥
Lord Sadāśiva accompanied by Umā and assuming the form of Indra, shone with that umbrella like the Mandara mountain with the disc of the moon.
english translation
rarAja bhagavAnsomaH zakrarUpI sadAzivaH ॥ tenAtapatreNa yathA candrabiMbena mandaraH ॥ 10 ॥
hk transliteration by Sanscript