Shiva Purana
रक्षिताः स्म तदा नाथ नीलकण्ठ इति श्रुतः ॥ विषं पास्यसि नो चेत्त्वं भस्मीभूतास्तदाखिलाः ॥ ३५ ॥
We were saved by you, O lord and you became famous as Nīlakaṇṭha (Blue-necked). If you had not drunk the poison then, every thing would have been reduced to ashes.
english translation
rakSitAH sma tadA nAtha nIlakaNTha iti zrutaH ॥ viSaM pAsyasi no cettvaM bhasmIbhUtAstadAkhilAH ॥ 35 ॥
hk transliteration by Sanscript