Is one who performs ablution before sleep while in a state of ritual impurity (junub) considered to have slept in a state of purity? And do they receive the same merits of sleeping in a state of purity as one who is pure but not ritually impure? And what should one do if they are unable to use water; should they perform tayammum with the intention of ablution or ghusl, whether for minor or major ritual impurity?

It is disliked for someone in a state of major ritual impurity (junub) or a menstruating woman (ha'idh) to sleep before purifying themselves. The most complete purification is by performing a full ritual bath (ghusl (definition)). This dislike is removed by performing ablution (wudu') similar to the ablution for prayer, thereby attaining the fundamental reward of purity, and the angels will bear witness for him. The prophetic traditions (ahadith) indicate the permissibility for a person in a state of major ritual impurity to sleep, eat, drink, and engage in intercourse before performing a full ritual bath, and this is a matter of consensus. It is recommended for him to perform ablution and wash his private parts for all of these actions, especially when resuming intercourse. Some scholars have held the view that tayammum (definition) (dry ablution) is permissible for a person in a state of major ritual impurity if he cannot find water or is unable to use it. When performing tayammum, he should intend to make permissible sleeping or what is recommended for him, and not intend it to be for the major or minor impurity, as tayammum does not remove impurity.