A hamzated (mahmūz) root contains hamzah (ء) as one of its actual radicals. A hamzah added as part of a derived pattern does not, by itself, make the underlying root hamzated.
أَمَرَ has hamzah in the first radical position.
سَأَلَ has it in the middle position.
قَرَأَ has it as the final radical.
These positions account for the three subdivisions known as mahmūz al-fāʾ, mahmūz al-ʿayn, and mahmūz al-lām.
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The Hamzated Category
The Seven Morphological Classes: Sound, Hamzated, Weak and Doubled
A hamzated (mahmūz) root contains hamzah (ء) as one of its actual radicals. A hamzah added as part of a derived pattern does not, by itself, make the underlying root hamzated.
أَمَرَ has hamzah in the first radical position.
سَأَلَ has it in the middle position.
قَرَأَ has it as the final radical.
These positions account for the three subdivisions known as mahmūz al-fāʾ, mahmūz al-ʿayn, and mahmūz al-lām.