They must cleanse themselves by bathing and rinsing out their mouths and then recite a sacred formula 108 times over the food or medicine to be given to the sick person. During his life on earth the Bhaisajya-guru Buddha made twelve vows, hoping that after he achieved buddhahood the prayers of all sentient beings would be answered and those who called on him would be of perfect health and free of disease.
首先必須洗澡漱口，保持身口的潔淨，然後對病人吃的食物或所服的藥湯藥丸，持咒念一百零八遍，才給病人服食，據說這樣有藥到病除的功能。在藥師佛前世修行菩薩道時，曾發十二大願，希望在他成佛以後，眾生的所有祈求，都能如願。