Charak Samhita
कठिनं चैव यद्द्रव्यं प्रायस्तल्लङ्घनं स्मृतम्। गुरु शीतं मृदु स्निग्धं बहलं स्थूलपिच्छिलम् ॥१३॥
-The drug or substance that is used for brimhana (nourishing) therapy possesses heavy, cold, soft, unctuous, thick, gross, slimy, sluggish, stable and smooth qualities.
english translation
kaThinaM caiva yaddravyaM prAyastallaGghanaM smRtam। guru zItaM mRdu snigdhaM bahalaM sthUlapicchilam ॥13॥
hk transliteration by Sanscript