Abu Qais, who was the servant of Sayyiduna Amr ibn al-As (may Allah be pleased with him), narrates: Once, Sayyiduna Amr ibn al-As (may Allah be pleased with him) went on a military expedition. During this time, he faced such severe cold as he had never experienced before. When he was about to go for the morning prayer, he said: "By Allah! I had a wet dream last night. Such cold, by Allah! I have never seen before." Then he washed his knees (where there were traces of the wet dream), performed ablution as for prayer, and led his companions in prayer. When they presented themselves before the Prophet Muhammad (peace and blessings be upon him), he asked his companions: "How did you find Amr, how was his companionship?" They praised Sayyiduna Amr (may Allah be pleased with him) greatly and said: "O Messenger of Allah! Once, he led us in prayer while he was in a state of major ritual impurity (janabah)." The Prophet Muhammad (peace and blessings be upon him) called Sayyiduna Amr. He explained the situation to him and said: "O Messenger of Allah! Allah Almighty has said: 'Do not kill yourselves.' If I had performed ghusl at that time, I would have died." At this, the Prophet Muhammad (peace and blessings be upon him) smiled.