Astanga Hrudaya
समोऽग्निर्विषमस्तीक्ष्णो मन्दश्चैवं चतुर्विधः। यः पचेत्सम्यगेवान्नं भुक्तं सम्यक् समस्त्वसौ॥७४॥
Jatharagni bheda – kinds of gastric fire: Thus, the agni is of four kinds – sama (normal), visama (erratic, unsteady), tiksna (strong) and manda (weak). Qualities of four kinds of Jatharagni: That which cooks (digests) the properly ingested food at the proper time is samagni (normal);
english translation
samo'gnirviSamastIkSNo mandazcaivaM caturvidhaH। yaH pacetsamyagevAnnaM bhuktaM samyak samastvasau॥74॥
hk transliteration by Sanscript