Shiva Purana
दुर्वासायं शिवः साक्षात्स चक्रं हरयेऽर्पितम् ॥ एवं साधारणमुनिं न जानीहि नृपोत्तम ॥ ४३॥
This sage Durvāsas is Śiva himself whose discus had been given to Viṣṇu. O excelent king, do not take him for an ordinary sage.
english translation
durvAsAyaM zivaH sAkSAtsa cakraM haraye'rpitam ॥ evaM sAdhAraNamuniM na jAnIhi nRpottama ॥ 43॥
hk transliteration by Sanscript