Ibn Abi Najih (may Allah have mercy on him) reported that a man said in the presence of Mujahid (may Allah have mercy on him) that the Prophet (peace and blessings be upon him) said: "One who travels alone is one devil, and two who travel together are two devils." Mujahid (may Allah have mercy on him) said: "The Prophet (peace and blessings be upon him) sent Sayyiduna Dihyah (may Allah be pleased with him) on a journey alone, and he sent Sayyiduna Abdullah and Sayyiduna Khabbab (may Allah be pleased with them both) (two men as well) as a raiding party. Rather, Sayyiduna Umar (may Allah be pleased with him) said: 'Travel in threes on your journeys, so that if one of you dies, the other two can attend to him as his guardians. One who travels alone is one devil, and two who travel are like two devils.'"