حَدَّثَنَا عُثْمَانُ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا ابْنُ نُمَيْرٍ، عَنْ سَعْدِ بْنِ سَعِيدٍ، حَدَّثَنِي مُحَمَّدُ بْنُ إِبْرَاهِيمَ، عَنْ قَيْسِ بْنِ عَمْرٍو، قَالَ رَأَى رَسُولُ اللَّهِ صلى الله عليه وسلم رَجُلاً يُصَلِّي بَعْدَ صَلاَةِ الصُّبْحِ رَكْعَتَيْنِ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " صَلاَةُ الصُّبْحِ رَكْعَتَانِ " . فَقَالَ الرَّجُلُ إِنِّي لَمْ أَكُنْ صَلَّيْتُ الرَّكْعَتَيْنِ اللَّتَيْنِ قَبْلَهُمَا فَصَلَّيْتُهُمَا الآنَ . فَسَكَتَ رَسُولُ اللَّهِ صلى الله عليه وسلم .
Narrated Qays ibn Amr: The Messenger of Allah (PBUH) saw a person praying after the congregational prayer at dawn was over. The Messenger of Allah (PBUH) said: There are two rak'ahs of the dawn prayer (i.e. the prescribed rak'ahs). The man replied: I did not pray the two rak'ahs before the dawn prayer. Hence I offered them now. The Messenger of Allah (PBUH) kept silent. Translation Not Available
Book Ref: Sunan Abi Dawud Book 5 Hadith 1267
Web Ref: Sunan Abi Dawud Book 5 Hadith 1262