Did the Prophet Muhammad (peace be upon him) explain what a person should do if they want to sleep in a state of impurity?
 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.