Charak Samhita
विरेचनं निरूहो वा तत्तीक्ष्णमिति निर्दिशेत्। जलाग्निकीटैरस्पृष्टं देशकालगुणान्वितम्॥५३॥
expulses the morbid doshas completely are said to be tikshna category of therapeutic emesis, purgation & medicated enema. The drugs which are not deteriorated by water (moisture), fire (heat & temperature), insects (microorganisms), collected from an ideal land, in specific season, with utmost required properties,
english translation
विरेचनं निरूहो वा तत्तीक्ष्णमिति निर्दिशेत्। जलाग्निकीटैरस्पृष्टं देशकालगुणान्वितम्॥५३॥
expulses the morbid doshas completely are said to be tikshna category of therapeutic emesis, purgation & medicated enema. The drugs which are not deteriorated by water (moisture), fire (heat & temperature), insects (microorganisms), collected from an ideal land, in specific season, with utmost required properties,
english translation