Narrated `Urwa: Az-Zubair quarrelled with a man from the Ansar because of a natural mountainous stream at Al-Harra. The Prophet said O Zubair! Irrigate (your lands and the let the water flow to your neighbor The Ansar said, O Allah's Messenger (This is because) he (Zubair) is your cousin? At that, the Prophet's face became red (with anger) and he said O Zubair! Irrigate (your land) and then withhold the water till it fills the land up to the walls and then let it flow to your neighbor. So the Prophet enabled Az- Zubair to take his full right after the Ansari provoked his anger. The Prophet had previously given a order that was in favor of both of them Az-Zubair said, I don't think but the Verse was revealed in this connection: But no, by your Lord, they can have no faith, until they make you judge in all disputes between them. (4.6)