Obligatory bathing is caused by junub, it can also be caused by various things.
It is stated in the book Al-Fiqh 'ala al-madzahib al-khamsah by Muhammad Answers Mughniyah, bathing is obligatory due to junub, menstruation, postpartum period, and the death of Muslims.
Junub bathing or obligatory bathing is one of the recommended acts of worship in Islam.
Taking a large bath is obligatory when you want to perform prayers. When fasting, the condition of junub does not become harmonious and conditional
Obligatory bathing is very important, because if it is not done it can prevent a person from carrying out other acts of worship, both fardhu and sunnah.
A person who is in a state of junub is prohibited from praying, sitting in the mosque, circling the Kaaba (tawaf), reading the Koran, and touching the mushaf.
Guide to Obligatory Bathing, one of the recommended acts of worship in Islam. Equipped with reading media features, to increase knowledge, including:
+ Prayer of Repentance
+ Remembrance and prayer after prayer
+ Minutes of women's menstruation
+ Book of Husband and Wife Manners
+ Qurrotul uyun and fathul izar
+ Daily Prayer Book