Musannaf Ibn Abi Shaybah 10372 — Crops watered by flowing water

Ibn Jurayj said: I asked Ata: Land that is watered by flowing water (from a spring and the like) most of the time, then for a period it needs to be watered from a well, then for another period, and then it returns to the spring, how is its zakah to be paid? He answered: There is a tenth. He said: The ruling follows whichever way it was watered for the longer period: if it was watered by spring water for longer than by bucket, there is a tenth on it; and if it was watered by bucket for longer than by the spring, there is half a tenth on it. I said: And property (land) that draws its water from the soil or is rain-fed most of the time, and then needs to be watered from a well, does it take the same ruling? He said: Yes.