Sahih al-Bukhari 2708
Peacemaking
If the Imam (i.ei., ruler) suggests a (re)conciliation
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 Messenger (ﷺ) about a water stream which both of them used for irrigation. Allah's Messenger (ﷺ) 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 Messenger (ﷺ) ! Is it because he is your cousin?" On that the complexion of Allah's Messenger (ﷺ) 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 Messenger (ﷺ) gave Az-Zubair his full right. Before that Allah's Messenger (ﷺ) had given a generous judgment beneficial for Az-Zubair and the Ansari, but when the Ansan irritated Allah's Messenger (ﷺ) 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)