Ashtangasamgraha 27.48

27.48

tebhyo bastiṃ puro dadyāttataḥ snigdhaṃ virecanam |

śakṛnnirhṛtya vā kiñcittīkṣṇābhiḥ phalavarttibhiḥ |

pravṛttaṃ hi malaṃ sigdho vireko nirharetsukham ||

To them one should first give an enema, and then an unctuous purgative;

or having evacuated some feces by sharp rectal suppositories;

for unctuous purgation easily removes waste that has begun to move.