[Machine] A man entered the mosque while the prayer had already started, so he prayed the two units of the Fajr prayer. When the Messenger of Allah ﷺ finished, the man asked if the morning prayer is four units.
أَنَّ رَجُلًا دَخَلَ الْمَسْجِدَ وَقَدْ أُقِيمَتِ الصَّلَاةُ فَصَلَّى رَكْعَتَيِ الْفَجْرِ فَلَمَّا قَضَى رَسُولُ اللهِ ﷺ لَاثَ بِهِ النَّاسُ فَقَالَ الصُّبْحُ أَرْبَعًا؟