Perform wudu when experiencing madhi.

This hadith is about the requirement of wudu for madhi, which is a type of fluid that comes out from the body during sexual arousal or excitement. According to this hadith, it was narrated by 'Ali that he asked a man to ask the Prophet about this and he said that wudu is required for it. This means that if someone experiences madhi, they must perform wudu in order to be considered clean and pure according to Islamic teachings. This hadith teaches us the importance of ritual ablution in Islam and how it can help us stay clean and pure before engaging in any activities or worshiping Allah Almighty.