Ashtangasamgraha 28.26

28.26

athāsthāpanīyamāturaṃ snehasvedopapannaṃ kṛtavamanavirekamāsevitapeyādisaṃsargakramamupajātabalamanuvāsanārhaṃ pūrvamevānuvāsayet |

śītavasantayordivā anyathā rātrāvavekṣya vā doṣādīn |

anyathā hi shehoktāmayaprādurbhāvaḥ ||

Then, one should first administer an unctuous enema to a patient fit for an evacuating enema who has been treated with oleation and sudation, has undergone emesis and purgation, has observed the dietary regimen of thin gruel and so forth, has gained strength, and is fit for an unctuous enema, / during the day in winter and spring, or otherwise at night, having examined the doṣas and other factors; / for otherwise the disorders mentioned regarding oleation will arise.