Mishkat al-Masabih 1877

Abu Huraira reported that the Prophet ﷺ said: ‘While a man was in an open, barren land, he heard a voice in a cloud saying, “Water the garden of so-and-so.” The cloud moved aside and poured its water onto a lava field. One of the channels there gathered all that water. The man followed the water and found a man standing in his garden, directing the water with his spade. He said to him, “Servant of Allah, what is your name?” He replied, “Servant of Allah, why are you asking me my name?” He said, “I heard a voice in the cloud whose water this is saying, ‘Water the garden of so-and-so,’ using your name. What do you do with it?” The man said, “Since you have told me this, I look at what it yields: I give a third of it in charity, I and my family eat a third, and I put a third back into it.”’ Muslim transmitted it.