Musannaf Ibn Abi Shaybah 867 — A man who sees in his sleep that he had

Hammad was asked about a man who wakes in the morning and sees wetness on his private part. He said: If he recalls having had a wet dream, he should perform the ritual bath; and if he does not recall it, the ritual bath is not required. Qatadah said: If the fluid came out in spurts, he should perform the ritual bath. I asked Qatadah: "How will he know?" He said: "He can find out by smelling it." Al-Hakam said: He does not perform the ritual bath.