Muwatta Imam Malik Book of Judgements, Hadith 30

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 ﷺ said, "Do not withhold the surplus water of a well from people."

وَحَدَّثَنِي مَالِكٌ، عَنْ أَبِي الرِّجَالِ، مُحَمَّدِ بْنِ عَبْدِ الرَّحْمَنِ عَنْ أُمِّهِ، عَمْرَةَ بِنْتِ عَبْدِ الرَّحْمَنِ أَنَّهَا أَخْبَرَتْهُ أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ " لاَ يُمْنَعُ نَقْعُ بِئْرٍ " .