The Messenger of Allah ﷺ said: One is not credited with having observed the prayer without the recitation (of al-Fatiha). So said Abu Huraira: (The prayer in which) the Messenger of Allah ﷺ recited in a loud voice, we also recited that loudly for you (and the prayer in which) he recited inwardly we also recited inwardly for you (to give you a practical example of the prayer of the Holy Prophet). (Using translation from Muslim 396a)
أَنَّ رَسُولَ اللهِ ﷺ قَالَ لَا صَلَاةَ إِلَّا بِقِرَاءَةٍ قَالَ أَبُو هُرَيْرَةَ فَمَا أَعْلَنَ رَسُولُ اللهِ ﷺ أَعْلَنَّاهُ لَكُمْ وَمَا أَخْفَاهُ أَخْفَيْنَاهُ لَكُمْ