Astanga Hrudaya
पक्वाशये पुरीषोत्था जायन्तेऽधोविसर्पिणः । वृद्धाः सन्तो भवेयुश्च ते यदामाशयोन्मुखाः ॥ ५३ ॥
Those arising from faeces take their origin in / reside in the pakvasaya- large intestine,usually moving downwards; when increased in number they travel up towards the amasaya- stomach and small intestine,
english translation
pakvAzaye purISotthA jAyante'dhovisarpiNaH । vRddhAH santo bhaveyuzca te yadAmAzayonmukhAH ॥ 53 ॥
hk transliteration by Sanscript