Sayyiduna Abu Sa'id Khudri (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) called an Ansari man. He came while water was dripping from his head. The Messenger of Allah (peace and blessings be upon him) said, "Perhaps we made you hurry." He replied, "Yes." The Messenger of Allah (peace and blessings be upon him) said, "When something urgent happens or you do not ejaculate, then ablution is obligatory upon you."