Sahih Muslim Book 003, Hadith Number 0601.

Chapter : It is permissible for a person to sleep after sexual intercourse (without a bath) and the desirability of ablution for him, and washing of the sexual organ, as he intends to eat, drink, or sleep or cohabit.

Ibn 'Umar said: 'Umar asked the verdict of the Shari'ah from the Apostle (may peace be upon him) thus: Is it permissible for any one of us to sleep in a state of impurity? He (the Holy Prophet said: Yes, he must perform ablution and then sleep and take a bath when he desires.

Related Hadith(s)