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Chapter: The Root Denominators
The fixed shares are six: one-half, one-quarter, one-eighth, two-thirds, one-third, and one-sixth.
The basic denominators number seven: “two halves,” or “one-half and the remainder,” both worked out on a denominator of two,
باب أصول المسائل
والفروض ستة: نصف وربع وثمن وثلثان وثلث وسدس.
والأصول سبعة: "فنصفان" أو نصف "وما بقي" من اثنين,