四分律比丘含注戒本 3.247

3.247

不犯者：有病；嚼乾餅及焦飯、芉蔗、瓜果、葡桃、胡桃、椑、桃、梨、風梨者。

There is no offense for: one who is ill; or chewing dry cakes and scorched rice, taro, sugar cane, melons and fruit, grapes, walnuts, wild persimmons, peaches, pears, and wild pears.