(27) CHAPTER. A Junub person should perform ablution before sleeping.
Narrated `Aisha: Whenever the Prophet intended to sleep while he was Junub, he used to wash his private parts and perform ablution like that for the prayer.
Narrated `Abdullah: `Umar asked the Prophet Can anyone of us sleep while he is Junub? He replied, Yes, if he performs ablution.
Narrated `Abdullah bin `Umar: `Umar bin Al-Khattab told Allah's Apostle, I became Junub at night. Allah's Apostle replied, Perform ablution after washing your private parts and then sleep.