Astanga Hrudaya
ग्रहण्या बलमग्निर्हि स चापि ग्रहणीबलः। दूषितेऽग्नावतो दुष्टा ग्रहणी रोगकारिणी॥५३॥
(ama unformed, unprocessed) state itself the strength of the grahani is from agni (the digestive fire) itself, and itself (strength of agni) is from grahani; when the agni undergoes vitiation, the grahani also gets vitiated and produces diseases that food which bestows nourishment to the dhatus of the body,
english translation
grahaNyA balamagnirhi sa cApi grahaNIbalaH। dUSite'gnAvato duSTA grahaNI rogakAriNI॥53॥
hk transliteration by Sanscript