Shiva Purana
निष्प्रपंचस्तथात्रेयो निर्देहः कश्यपस्तथा ॥ सुतपाश्चैव वासिष्ठस्सप्तैवैते महर्षयः ॥ ६० ॥
Nisprapanca and Atreya and Nirdeha and Kasyapa Sutapa and Vasishta are the seven great sages.
english translation
niSprapaMcastathAtreyo nirdehaH kazyapastathA ॥ sutapAzcaiva vAsiSThassaptaivaite maharSayaH ॥ 60 ॥
hk transliteration by Sanscript