It is not contrary to the first narration, because the Imam عليه السلام, peace be upon him, said: “There is no zakat on all of his produce (ghallat).” And we do not say that there is zakat on all of his produce. Rather, it becomes obligatory on the four categories, which are: dates, raisins, wheat, and barley. He only singled out orphans with this ruling because others are recommended to take out zakat from the rest of the grains, whereas that is not so in the wealth of orphans. For that reason, they were specifically mentioned.
Commentary #7