Perform ritual ablution when necessary according to Islamic teachings

This hadith, narrated by Abu Hurairah, teaches us that it is not permissible to perform ritual ablution or ghusl while in a state of junub. Junub refers to the state of being impure due to sexual intercourse or wet dream. In this case, one must first take a bath and then perform ghusl in order for it to be valid. This hadith serves as an important reminder for Muslims who are looking to purify themselves through ritual ablution and other forms of worship. It also serves as an example of how we should strive for purity and cleanliness in our lives, both physically and spiritually.