مِشْكَاةُ الْمَصَابِيحِ
Mishkat al-Masabih 1058
Prayer
The Congregation and its Excellence - Section 1
وَعَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «إِذَا أُقِيمَتِ الصَّلَاةُ فَلَا صَلَاةَ إِلَّا الْمَكْتُوبَة» . رَوَاهُ مُسلم
Abu Huraira reported God’s Messenger as saying, “When the time for prayer comes, only the prescribed prayer is to be said.” Muslim transmitted it.
Mishkat al-Masabih, 1058صَحِيحٌ (الألباني)