Urinating Blood
Scholars have said that seeing oneself urinating blood may indicate having intercourse with a menstruating woman, and a story supports this interpretation. It was also said that if the dreamer's wife is pregnant, this vision might signify a miscarriage.
Per Ibn Sirin's Muntakhab al-Kalam fi Tafsir al-Ahlam
Note: These are traditional scholarly interpretations (ijtihad) drawn from a specific classical source — not a binding religious ruling, fortune-telling, or a prediction of the future.