Astanga Hrudaya
अदृढस्नेहकोष्ठस्तु पिबेदूर्ध्वं दशाहतः। भूयोऽप्युपस्कृततनुः स्नेहस्वेदैर्विरेचनम्॥३७॥
Persons who have unstable and unlubricated alimentary tract, should consume the purgative drugs after ten days – during which Snehana and sweating therapies should be done because the body which has been well prepared with Snehana and sweating therapies, will be able to have purgation properly;
english translation