Maliks Muwatta Book 36, Hadith Number 34.

Section : Judgement on Benefiting Neighbours.

Malik related to me from Amr ibn Yahya al-Mazini that his father said, “There was a stream in my grand-father’s garden belonging to Abd ar-Rahman ibn Awf Abd ar-Rahman ibn Awf wanted to transfer it to a corner of the garden nearer to his land, and the owner of the garden prevented him. Abd ar-Rahman ibn Awf spoke to Umar ibn al-Khattab about it, and he gave a judgement to Abd ar-Rahman ibn Awf that he should transfer it.”