Shiva Purana
त्रिगुणो राजसश्चैव तामसः सात्त्विकस्तथा ॥ चत्वार एते क्रमशः प्रथमावरणे स्थिताः ॥ ४० ॥
The three modes of material nature are Rajasic, Tamasic and Sattvic. These four are situated in the first cover respectively.
english translation
triguNo rAjasazcaiva tAmasaH sAttvikastathA ॥ catvAra ete kramazaH prathamAvaraNe sthitAH ॥ 40 ॥
hk transliteration by Sanscript