. (Second chain) When the Messenger of Allah, peace and blessings be upon him, intended to sleep, he would perform ablution as for prayer and then sleep.
Hadith Takhrij«انظر الحديث بالطريق الاول ترقیم بيت الأفكار الدولية: 25414»
Brief Explanation
Benefits: … It is narrated from Sayyiduna Umar radi Allahu anhu that he asked the Noble Prophet sallallahu alayhi wa sallam whether any one of us may sleep in a state of major ritual impurity (janabah). The Prophet sallallahu alayhi wa sallam replied: ((He may sleep, and perform ablution (wudu) if he wishes.)) … Yes, he may sleep, but if he wishes, he should perform ablution (wudu). (Sahih Ibn Khuzaymah: 1/106, Sahih Ibn Hibban: 4/15) From this hadith, it is established that performing ablution (wudu) before sleeping is recommended (mustahabb) for one in a state of major ritual impurity (janabah), and this is also the opinion of the majority of the scholars.