Sayyiduna Imran bin Husayn (may Allah be pleased with him) said: We travelled the whole night with the Prophet (peace and blessings be upon him) on a journey. In the last part of the night we reached a stopping place and halted to rest, and there is nothing sweeter to a traveller than that. Nothing woke us but the heat of the sun. The first to wake were so-and-so and so-and-so (Awf (may Allah have mercy on him) named them as well), then the fourth was Sayyiduna Umar bin al-Khattab (may Allah be pleased with him). When the Prophet (peace and blessings be upon him) slept, no one would wake him (peace and blessings be upon him); rather he (peace and blessings be upon him) would wake up by himself, because we did not know what might be happening to him (peace and blessings be upon him) in his sleep. The narrator said: When Sayyiduna Umar (may Allah be pleased with him) woke and saw what had befallen the people, and he was a strong (robust) man, he said the takbir in a loud voice. He kept saying the takbir and raising his voice, until the Prophet (peace and blessings be upon him) woke up at his voice. When he (peace and blessings be upon him) woke, we complained to him (peace and blessings be upon him) about what had befallen us. He (peace and blessings be upon him) said: "There is no harm" (Awf (may Allah have mercy on him) was in doubt whether he said "la dayr" or "la darar", both meaning "no harm"). He (peace and blessings be upon him) said: "Set off." The Prophet (peace and blessings be upon him) set off and travelled a short distance, then he (peace and blessings be upon him) dismounted and called for water; he (peace and blessings be upon him) performed ablution, the call to prayer was given, and he led the people in prayer. When he finished the prayer, he saw a man sitting apart who had not prayed with the people. He (peace and blessings be upon him) said: "O so-and-so! What prevented you from praying with the people?" He said: O Messenger of Allah! I had become junub and there was no water. The Messenger of Allah (peace and blessings be upon him) said: "Hold to the earth, for it is sufficient for you." The narrator said: The Messenger of Allah (peace and blessings be upon him) travelled on, and the people complained of thirst, so he (peace and blessings be upon him) dismounted. He (peace and blessings be upon him) called so-and-so (Awf (may Allah have mercy on him) named him as well) and called Sayyiduna Ali (may Allah be pleased with him), and said: "Go, both of you, and look for water for us." The two of them set off and suddenly came upon a woman (riding) on her camel between two large water-skins. They asked her: Where is the water? She said: I left the water at this time yesterday, and our group is behind. Abd al-Wahhab said: That is, they are thirsty. The two of them said to her: Come with us. She said: Where to? They said: To the Messenger of Allah (peace and blessings be upon him). She said: Is he the one who is called the Sabi'? They said: Yes, the very one you mean. The two of them brought her to the Messenger of Allah (peace and blessings be upon him), told him what she had said, and had her dismount from her camel. The Messenger of Allah (peace and blessings be upon him) called for a vessel and poured water into it from the mouths of the water-skins, rinsed his mouth with the water and returned it into the water-skins, then closed their mouths and opened their spouts. Then he (peace and blessings be upon him) said to the people: "Drink and give water to drink." So whoever wished drank and whoever wished gave to drink. Last of all, he gave the man who was junub a vessel of water and said: "Pour this water over your body." The woman was watching this scene and also what was being done with her water. The narrator said: By Allah! When he had used the water as needed, it seemed to us that the water-skins were fuller than before. Then the Prophet (peace and blessings be upon him) said: "Gather some food and provisions for this woman." So they gathered flour and sawiq (barley meal) and prepared provisions of food for her, put the food in a cloth and placed it in front of her. The Prophet (peace and blessings be upon him) addressed the woman, saying: "By Allah! You know that we have not diminished your water at all, but it is Allah who has given us to drink." The woman reached her people somewhat late, and the people of her tribe said: What delayed you? The woman, in amazement, said: Two men came to me and took me to this Sabi' (we seek refuge in Allah). Then the woman narrated the whole incident and said: By Allah! He is either the greatest sorcerer in this region or a true messenger. The narrator said: Later the Muslims would raid the polytheists around their area, but would not touch her area. So the woman said to the people of her tribe: These people are deliberately leaving you alone; would you not like to become Muslims? So the people obeyed her and all of them became Muslims.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 1046