Charak Samhita
विरेचनानां सर्वेषां सुधा तीक्ष्णतमा मता। सङ्घातं हि भिनत्त्याशु दोषाणां कष्टविभ्रमा॥३॥
॥ Purgative effects of Sudha॥ Guna (qualities): Tikshnatama(strongest/drastic), among all purgative drugs snuhi is the drastic purgative. It disintegrates the accumulated impurities quickly.
english translation
virecanAnAM sarveSAM sudhA tIkSNatamA matA। saGghAtaM hi bhinattyAzu doSANAM kaSTavibhramA॥3॥
hk transliteration by Sanscript