Both examples are hollow Form-VIII verbs and both show medial ā in the perfect, yet their roots and meanings differ.
Featureاِجْتَابَاِخْتَارَ
Rootج و بخ ي ر
MeaningTraverseChoose
Verbal nounاِجْتِيَابٌاِخْتِيَارٌ
Imperativeاِجْتَبْاِخْتَرْ
Prohibitionلَا تَجْتَبْلَا تَخْتَرْ
The infixed tāʾ remains in both. Change of the original medial wāw or yāʾ into long ā is weak-letter alteration, not the loss of the additional tāʾ or a switch into another derived form.
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Derived Hollow Wāw and Yāʾ Verbs: Short Paradigms and Morphological Reasoning
Both examples are hollow Form-VIII verbs and both show medial ā in the perfect, yet their roots and meanings differ.
Featureاِجْتَابَاِخْتَارَ
Rootج و بخ ي ر
MeaningTraverseChoose
Verbal nounاِجْتِيَابٌاِخْتِيَارٌ
Imperativeاِجْتَبْاِخْتَرْ
Prohibitionلَا تَجْتَبْلَا تَخْتَرْ
The infixed tāʾ remains in both. Change of the original medial wāw or yāʾ into long ā is weak-letter alteration, not the loss of the additional tāʾ or a switch into another derived form.