Astanga Hrudaya
समः समाने स्थानस्थे विषमोऽग्निर्विमार्गगे। पित्ताभिमूर्च्चिते तीक्ष्णो मन्दोऽस्मिन्कफपीडिते॥७३॥
Jatharagni bheda – kinds of gastric fire: It (jatharagni) is sama (normal) when samanavata is in its normal seat , it becomes visama (erratic) when samana vata is in the wrong path (or increases); it is tiksna (very powerful) when (the samanavata is) associated with pitta, and it is manda (weak) when (samanavata is) associated with kapha
english translation