Malik related to me from Amr ibn Yahya al-Mazini that his fathersaid, "There was a stream in my grand-father's garden belonging to Abdar-Rahman ibn Awf Abd ar-Rahman ibn Awf wanted to transfer it to acorner of the garden nearer to his land, and the owner of the gardenprevented him. Abd ar-Rahman ibn Awf spoke to Umar ibn al-Khattababout it, and he gave a judgement to Abd ar-Rahman ibn Awf that heshould transfer it."
USC-MSA web (English) reference: Book 36, Hadith 34
Arabic reference: Book 36, Hadith 1438