and there is no harm in the sweat of any of them, nor in that of the junub. Likewise, if there is no objection to using the water left over by a menstruating woman, then the leftover water of a woman who is not menstruating is even more suitable for ablution. Performing ablution before sleep for the junub is commendable but not obligatory, and it is permissible for him to eat and drink before bathing, provided he first washes his hands and removes any impurity.