ثَلَاثَةٌ ordinarily expresses a count of three, while ثُلَاثَ expresses distribution in groups of three.
جَاءَ ثَلَاثَةُ طُلَّابٍ
Translation: Three students came. This states the number.
دَخَلَ الطُّلَّابُ ثُلَاثَ
Translation: The students entered in threes. This describes their distribution.
The distinction helps explain why distributive forms are considered in the discussion of ʿadl.
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Causes of Diptote Status — ʿAdl and Waṣf
ثَلَاثَةٌ ordinarily expresses a count of three, while ثُلَاثَ expresses distribution in groups of three.
جَاءَ ثَلَاثَةُ طُلَّابٍ
Translation: Three students came. This states the number.
دَخَلَ الطُّلَّابُ ثُلَاثَ
Translation: The students entered in threes. This describes their distribution.
The distinction helps explain why distributive forms are considered in the discussion of ʿadl.