Sayyiduna Abu Sa‘id Khudri and Sayyiduna Abu Ayyub Ansari (may Allah be pleased with them both), along with some other Ansari companions, used to say:“Water (i.e., ritual bath) is due to water (i.e., ejaculation).”They also used to say:“A man is not obligated to perform ghusl (ritual bath) if he touches a woman, unless ejaculation occurs.”When this was conveyed to Sayyiduna ‘Umar, ‘Abdullah ibn ‘Umar, and Sayyidah ‘A’ishah (may Allah be pleased with them), they refuted it and said:“If the private part (of a man) meets the private part (of a woman), then ghusl becomes obligatory.”Sayyiduna Sahl ibn Sa‘d (may Allah be pleased with him), who met the Prophet (peace and blessings be upon him) at the age of fifteen, narrates: Sayyiduna Ubayy ibn Ka‘b (may Allah be pleased with him) informed me that the fatwa of «الْمَاءُ مِنَ الْمَاءِ» was a concession from the Messenger of Allah (peace and blessings be upon him) at the beginning of Islam; later, he commanded the performance of ghusl. ‘Abd al-Malik ibn Marwan (may Allah have mercy on him) had derived this ruling from an Ansari; when he learned about the obligation of ghusl, he himself began to perform ghusl and started commanding others to do so.