ذِكْرُ الْخَاصِّ بَعْدَ الْعَامِّ
Mentioning a particular item after a general class.
Example: «اجْتَهِدُوا فِي دُرُوسِكُمْ وَاللُّغَةِ الْعَرَبِيَّةِ» — Work diligently at your lessons, especially Arabic.
Arabic already belongs to “your lessons”, but separately naming it highlights its special importance. The extra phrase does not remove Arabic from the general class; it directs special attention to a distinguished member.
The benefit is emphasis on the particular item, not the introduction of an unrelated duty.