Astanga Hrudaya
सर्पिर्मज्जा वसा तैलं स्नेहेषु प्रवरं मतम्। तत्रापि चोत्तमं सर्पिः संस्कारस्यानुवर्तनात्॥२॥
Oleating substances – Sneha Dravyah – Sarpi (ghee, clarified butter), Majja (bone marrow), Vasa – muscle fat and Taila (oil) – are considered best among oleating substances; Among these, Ghee is the best. Because,
english translation
sarpirmajjA vasA tailaM sneheSu pravaraM matam। tatrApi cottamaM sarpiH saMskArasyAnuvartanAt॥2॥
hk transliteration by Sanscript