Hadith 514330
Chapter 36: Judgements - كتاب الأقضية
وَحَدَّثَنِي مَالِكٌ، عَنْ أَبِي الرِّجَالِ، مُحَمَّدِ بْنِ عَبْدِ الرَّحْمَنِ عَنْ أُمِّهِ، عَمْرَةَ بِنْتِ عَبْدِ الرَّحْمَنِ أَنَّهَا أَخْبَرَتْهُ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " لاَ يُمْنَعُ نَقْعُ بِئْرٍ " .
Malik related to me from Abu'r-Rijal Muhammad ibn Abd ar-Rahman from his mother Amra bint Abd ar-Rahman that she informed him that the Messenger of Allah, may Allah bless him and grant him peace, said, "Do not withhold the surplus water of a well from people."
Reference Muwatta Malik 514330
USC-MSA web (English) reference : Book 36, Hadith 30