«حَافِظُوا عَلَى الصَّلَوَاتِ وَالصَّلَاةِ الْوُسْطَى»
Maintain the prayers, and especially the middle prayer.
This is part of Qurʾān 2:238. The middle prayer is already included in the collective ṣalawāt (الصلوات), yet it is singled out afterward. The repetition is purposeful, emphasizing its particular importance.
The specific instance remains a member of the general class. The added mention is eloquent because it highlights that instance without changing the scope of the original command.