Charak Samhita
बलोपचयवर्णार्थमेष निर्दिश्यते क्रमः। रूक्षमर्धोद्धृतस्नेहं यतश्चानुद्धृतं घृतम्॥८४॥
Butter-milk is of three types: 1. From which fat is completely removed 2. From which half of the fat is removed 3. From which fat is not at all removed.
english translation
balopacayavarNArthameSa nirdizyate kramaH। rUkSamardhoddhRtasnehaM yatazcAnuddhRtaM ghRtam॥84॥
hk transliteration by Sanscript