المؤمنين

In a sentence

• المؤمنين يصلون في المسجد.

  The believers pray in the mosque.

  In this sentence, 'المؤمنين' refers to a group of believers, used as the subject performing the action of praying in the mosque.

• رأيت المؤمنين في الحفل الخيري.

  I saw the believers at the charity event.

  Here, 'المؤمنين' is the object of the verb 'رأيت', indicating the group of believers observed at the event.

• ندعو بالخير للمؤمنين.

  We pray for goodness for the believers.

  In this sentence, 'المؤمنين' is used as the object of the preposition 'لـ', signifying the group to whom the prayer is directed.