Umar asked the verdict of the Shari'ah from the Apostle (ﷺ) thus: Is it permissible for any one of us to sleep in a state of impurity? He (the Prophet said: Yes, he must perform ablution and then sleep and take a bath when he desires.
Reference: Sahih Muslim 306 b In-book : Book 3, Hadith 25 USC-MSA web (English) : Book 3, Hadith 601 (deprecated)
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