《太平广记·卷三·神仙三》
因为凡是好道慕仙的人，都是下定决心意志坚定的人。他们只要能斋戒净心闭门思过，这就可以减去一个月的罪恶。如果再连续克服自己的缺点一心向善，奉祀天神心存道义，坚持一个月的修行，就可减去一年的罪恶。
夫好道慕仙者，精诚志念：斋戒思愆，辄除过一月；克己反善，奉敬真神，存真守一，行此一月，辄除过一年。
Because all those who pursue the Way and yearn to become immortals are determined and have a firm will. As long as they can fast, purify their hearts, and reflect on their past mistakes behind closed doors, this can reduce a month's worth of sins. If they can then continue to overcome their shortcomings, focus on doing good, worship the gods, and uphold righteousness, and persevere in their cultivation for a month, they can reduce a year's worth of sins.