Astanga Hrudaya
रसेषु व्यपदिश्यन्ते साहचर्योपचारतः। तत्र द्रव्यं गुरुस्थूलस्थिरगन्धगुणोल्बणम्॥५॥
Qualities of a substance are ascribed to the taste because of their intimate co-existence. Qualities of substances based on the predominance of elements – Qualities of solid substances – (Parthiva Dravya Laksana)- Earth has – Guru (heaviness, heavy to digest), Sthula (bulky), Sthira (stable) and Gandha (smell) qualities.
english translation
raseSu vyapadizyante sAhacaryopacArataH। tatra dravyaM gurusthUlasthiragandhaguNolbaNam॥5॥
hk transliteration by Sanscript