It is narrated from Hazrat Aisha (may Allah be pleased with her) that the Prophet (peace and blessings be upon him) said: No one should be prevented from using water that is in excess of need or water remaining in a well.
Hadith Referenceمسند احمد / مسند النساء / 26147
Hadith Gradingحکم دارالسلام:حديث صحيح، خارجة بن عبدالله توبع