When it was dawn, the Messenger of Allah ﷺ observed two rak'ahs, and I would say: Does he recite only the opening chapter of the Qur'an in it?
كَانَ رَسُولُ اللَّهِ ﷺ إِذَا طَلَعَ الْفَجْرُ صَلَّى رَكْعَتَيْنِ أَقُولُ هَلْ يَقْرَأُ فِيهِمَا بِفَاتِحَةِ الْكِتَابِ