四分律比丘含注戒本 1.128

1.128

佛言：「亂意睡眠有五過失：一者，惡夢；二者，諸天不護；三者，心不入法；四者，不思惟明相；五者，於夢中失精。」善意睡眠有五功德，即反上句也。

The Buddha said: “Sleeping with a confused mind has five faults: first, bad dreams; second, devas do not protect one; third, the mind does not enter the Dharma; fourth, not contemplating the first light of dawn; fifth, emission of semen in a dream.” Sleeping with a wholesome mind has five merits, which are the reverse of the above sentences.