The Tree of Trees: Why was the taa deleted in the singular form of "shajarah"?
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The questioner : And regarding "shajarah" and "shujarat," why was the taa deleted?
The Shaykh : It was deleted because it is originally superfluous, and we have made do with the taa of the plural, which suffices in place of its presence. This is known because the taa in "shajarah" was brought in for the purpose of femininity, and it is in the state of separation. So when we pluralize it, we say "shujarat," and we have made do with the taa of the plural in place of its femininity.
The Shaykh : It was deleted because it is originally superfluous, and we have made do with the taa of the plural, which suffices in place of its presence. This is known because the taa in "shajarah" was brought in for the purpose of femininity, and it is in the state of separation. So when we pluralize it, we say "shujarat," and we have made do with the taa of the plural in place of its femininity.