Abu Huraira reported
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).