Shiva Purana
सूर्ये तपति यश्चासौ शुचिः सौर उदाहृतः ॥ हव्यवाहः कव्यवाहः सहरक्षा इति त्रयः ॥ ३९ ॥
The sun that shines in the sun is called the pure sun. There are three types of sacrifices: Havyavaha, Kavyavaha and Saharaksha.
english translation
sUrye tapati yazcAsau zuciH saura udAhRtaH ॥ havyavAhaH kavyavAhaH saharakSA iti trayaH ॥ 39 ॥
hk transliteration by Sanscript