四分律比丘含注戒本 2.357

2.357

彼非時受食食，咽咽墮。若「非時」過非時，「七日」過七日，並墮。盡形壽藥，無因緣服者，吉羅。不犯者：作黑石蜜法爾故；有病者服吐下藥，日時過，煮麥令皮不破，漉汁飲。又喉中哯出咽者，無犯。

If he receives food and eats at an improper time, with each swallow he commits a prāyaścittika. If 'untimely' food exceeds the improper time, or 'seven-day' medicine exceeds seven days, both incur a prāyaścittika. Taking lifelong medicine without cause is a duṣkṛta. Exceptions: making jaggery, because of the rule; if a sick person takes emetic or purgative medicine and the hour has passed, boiling barley so that the skin does not break and drinking the strained broth. Also, if one regurgitates food from the throat and swallows it, there is no offense.