Musannaf Ibn Abi Shaybah 972 — Semen, madhi and wadi

Sayyiduna Ali (may Allah be pleased with him) says: I used to emit madhy. I asked Sayyiduna al-Miqdad to ask the Messenger of Allah (peace and blessings be upon him) about it, because the Prophet's daughter was married to me, so I felt shy to ask this question. Sayyiduna al-Miqdad asked, and the Prophet (peace and blessings be upon him) said, "Every adult man emits madhy. If it is mani, ghusl is required; if it is madhy, wudu is required."