LessonsAdvanced Sarf Application: Ambiguous Forms, Weak-Letter Reasoning and Error CorrectionQuiz

Incorrect: the root of قَالَ is q–alif–l merely because alif appears in the writing.

Correct: its root is q–w–l, making it hollow-wāw. By comparison, بَاعَ has b–y–ʿ and is hollow-yāʾ.

SurfaceRootTypeHelpful form
قَالَق و لHollow-wāwيَقُولُ
بَاعَب ي عHollow-yāʾيَبِيعُ
رَمَىر م يFinal-weak yāʾيَرْمِي
دَعَاد ع وFinal-weak wāwيَدْعُو

Corroborate roots by comparing perfect, imperfect, and other inflected forms.

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Written Alif Versus Underlying Weak Radical

Incorrect: the root of قَالَ is q–alif–l merely because alif appears in the writing.

Correct: its root is q–w–l, making it hollow-wāw. By comparison, بَاعَ has b–y–ʿ and is hollow-yāʾ.

Corroborate roots by comparing perfect, imperfect, and other inflected forms.