Charak Samhita
शङ्खिनीसप्तलासिद्धात् क्षीराद्यदुदियाद्घृतम्। कल्कभागे तयोरेव त्रिवृच्छ्यामार्धसंयुते॥१२॥
[Ghee (clarified butter) preparations] Ghrita (ghee, clarified butter) should be prepared from the milk processed with saptala & shankhini. This ghrita, is processed with paste of saptala & shankhini along with half part of shyama and trivrita.
english translation
zaGkhinIsaptalAsiddhAt kSIrAdyadudiyAdghRtam। kalkabhAge tayoreva trivRcchyAmArdhasaMyute॥12॥
hk transliteration by Sanscript