Narrated `Urwa bin Az-Zubair: Az-Zubair told me that he quarreled with an Ansari man who had participated in (the battle of) Badr in front of Allah's Apostle about a water stream which both of them used for irrigation. Allah's Apostle said to Az-Zubair,   O Zubair! Irrigate (your garden) first, and then let the water flow to your neighbor.   The Ansari became angry and said,   O Allah's Apostle! Is it because he is your cousin?   On that the complexion of Allah's Apostle changed (because of anger) and said (to Az-Zubair),   I irrigate (your garden) and then withhold the water till it reaches the walls (surrounding the palms).   So, Allah's Apostle gave Az-Zubair his full right. Before that Allah's Apostle had given a generous judgment beneficial for Az-Zubair and the Ansari, but when the Ansan irritated Allah's Apostle he gave Az-Zubair his full right according to the evident law. Az-Zubair said,   By Allah ! I think the following Verse was revealed concerning that case:   But no by your Lord They can have No faith Until they make you judge In all disputes between them.   (4.65)