Abdullah bin Ka'b reports that Hazrat Mahmood bin Labeed Ansari asked Sayyiduna Zaid bin Thabit Ansari (may Allah be pleased with him): If a man has intercourse with his wife, then penetrates but does not ejaculate? Sayyiduna Zaid (may Allah be pleased with him) said: He should perform ghusl (ritual bath). Mahmood said that Sayyiduna Ubayy bin Ka'b (may Allah be pleased with him) did not consider ghusl obligatory in this situation. Sayyiduna Zaid (may Allah be pleased with him) said that Sayyiduna Ubayy bin Ka'b (may Allah be pleased with him) retracted from this opinion before his death.