قَامَ زَيْدٌ
Translation: Zayd stood.
«زَيْدٌ» is the subject and a declinable noun; its ḍamma marks nominative case.
قَامَ هَؤُلَاءِ
Translation: These people stood.
«هَؤُلَاءِ» is also the subject but is an indeclinable noun, in the nominative position without changing its form.
Conclusion: not every subject is a declinable noun.
- subjects
| Word | Meaning |
|---|---|
| قَامَ زَيْدٌ | Muʿrab noun as subject |
| قَامَ هَؤُلَاءِ | Mabnī noun as subject |