Hazrat Mujahid says that ghusl is not obligatory until one is certain of having become junub.

Hazrat Saeed bin Jubair and Hazrat Ata say that when one sees semen, one should perform ghusl (ritual bath).

Hazrat Sha’bah says that I asked Hazrat Hakam and Hammad about the person who wakes up and sees wetness. So Hazrat Hakam said he should not perform ghusl. Hazrat Hammad said if he remembers having a wet dream, then he should perform ghusl.

Hazrat Sufyan says that he should perform ghusl (ritual bath).

Hazrat Qatadah says that one should not perform ghusl until one is certain of having had a wet dream.

Hazrat Saeed bin Jubair says that ghusl (ritual bath) becomes obligatory after sexual desire and then its cessation.

Hazrat Hammad was asked about a person who sees wetness on his private part in the morning. He replied that if he remembers having a wet dream, he should perform ghusl, and if he does not remember, then ghusl is not obligatory. Hazrat Qatadah says that if the fluid came out with a spurt, he should perform ghusl. I asked Qatadah how he would know this. He replied that he can find out by smelling it. Hazrat Hakam says that he will not perform ghusl.

Hazrat Aisha (may Allah be pleased with her) narrates that the Noble Prophet (peace and blessings be upon him) said: When any one of you sees wetness after waking up, even if he does not remember having a wet dream, he should perform ghusl; and if he remembers having a wet dream but does not see wetness, then ghusl is not obligatory upon him.

Hazrat Aisha (may Allah be pleased with her) narrates that once Asma bint Shakal came to the service of the Prophet Muhammad (peace and blessings be upon him) and asked, "When a woman becomes pure from menstruation, how should she perform ghusl (ritual bath)?" The Prophet (peace and blessings be upon him) said, "Take lote tree leaves and water, first perform wudu (ablution), then wash your head, then rub your head in such a way that water reaches the roots, then pour water over the entire body, then take a piece of cloth used during menstruation and clean yourself with it." She asked, "O Messenger of Allah! How should I clean myself with the menstrual cloth?" He replied, "Clean yourself with it." Hazrat Aisha (may Allah be pleased with her) says that I understood what the Prophet (peace and blessings be upon him) meant, so I said to the woman, "Clean the traces of blood."

Hazrat Urwah narrates that Muhammad (peace be upon him) said to Hazrat Aisha (may Allah be pleased with her) during her menstruation: "Undo your hair and perform ghusl (ritual bath)."