مِشْكَاةُ الْمَصَابِيحِ
Mishkat al-Masabih 2858
Business Transactions
Business Transactions which are Forbidden - Section 1
وَعنهُ قَالَ: نهى رَسُول الله عَن بيع فضل المَاء. رَوَاهُ مُسلم
He said that God’s Messenger forbade the sale of excess water. Muslim transmitted it.
Mishkat al-Masabih, 2858صَحِيح (الألباني)