Musannaf Ibn Abi Shaybah 1045 — A man on a journey with his wife

Abu al-Awwam said: Once I was sitting with Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) when a bedouin came and said: We take our livestock far away from water. Then one of us feels the need to have intercourse with his wife; what should we do? He said: Ibn Umar would not do so; but as for you, when you find water, take the ritual bath (ghusl).