جَاءَ ثَلَاثَةُ طُلَّابٍ.
رَأَيْتُ ثَلَاثَةَ طُلَّابٍ.
مَرَرْتُ بِثَلَاثَةِ طُلَّابٍ.
Three students arrived; I saw three students; I passed by three students.
The numeral changes with syntactic case.
The counted noun remains genitive because it is the muḍāf ilayh.
Opening interactive controls...
Case of a 3–10 Numeral
Number Nouns: Rules from One to One Thousand
جَاءَ ثَلَاثَةُ طُلَّابٍ.
رَأَيْتُ ثَلَاثَةَ طُلَّابٍ.
مَرَرْتُ بِثَلَاثَةِ طُلَّابٍ.
Three students arrived; I saw three students; I passed by three students.
The numeral changes with syntactic case.
The counted noun remains genitive because it is the muḍāf ilayh.