Is it permissible to combine different harvests from a single year for Zakat assessment?

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The fruit yield of a single year must be combined with itself, irrespective of whether the timing of their ripening and maturity occurred at the same time or differed. If one portion is harvested and then another ripens and is harvested, the latter is joined with the former. If a date palm produces two yields in one year, one yield is combined with the other to meet the threshold for Zakat (nisab). This ruling is held by Abu al-Khattab and Ibn Aqil. The evidence is that both are fruits of one year, thus they combine as in the case of a single year's crop or millet that sprouts twice; furthermore, the second yield would combine with the single yield if the first did not exist, so its existence should not prevent combination. The argument regarding separation being a cause for separation is refuted by the example of millet.