Shiva Purana
एवं शिवचतुर्दश्या व्रतं जातं च निर्मलम् ॥ अज्ञानतो जागरणं परमानन्ददायकम् ॥ ३०॥
Thus, unwittingly she observed the rites of Śivacaturdaśī and kept awake during the night and obtained great bliss.
english translation
evaM zivacaturdazyA vrataM jAtaM ca nirmalam ॥ ajJAnato jAgaraNaM paramAnandadAyakam ॥ 30॥
hk transliteration by Sanscript