LessonsThe Rule of the Muʿrab: Visible and Estimated CaseQuiz

Last lesson used «هَؤُلَاءِ» as an indeclinable noun. Here «مُوسَىٰ» introduces another situation.

مُوسَىٰ: declinable; its nominative, accusative, and genitive case signs are estimated.
هَؤُلَاءِ: an indeclinable demonstrative; it can fill different syntactic positions without changing its fixed form.

Core distinction
With estimated case, a muʿrab noun has case vowels that cannot surface. With mabnī, the fixed ending does not change through the governors; the noun can instead be described as occupying a case position.

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Estimated muʿrab is not mabnī

The Rule of the Muʿrab: Visible and Estimated Case

Last lesson used «هَؤُلَاءِ» as an indeclinable noun. Here «مُوسَىٰ» introduces another situation.

مُوسَىٰ: declinable; its nominative, accusative, and genitive case signs are estimated.
هَؤُلَاءِ: an indeclinable demonstrative; it can fill different syntactic positions without changing its fixed form.

Core distinction
With estimated case, a muʿrab noun has case vowels that cannot surface. With mabnī, the fixed ending does not change through the governors; the noun can instead be described as occupying a case position.