Ashtangahridayasamhita 1090

1090

pittāvasānaṃ vamanaṃ virekād ardhaṃ kaphāntaṃ ca virekam āhuḥ |
dvi-trān sa-viṭkān apanīya vegān meyaṃ vireke vamane tu pītam || 32 ||

They say that emesis ends with bile, is half [the quantity] of purgation, and that purgation ends with phlegm. / In purgation, having excluded two or three bouts containing feces, [the rest] is to be measured; but in emesis, what was drunk [is excluded].