حَدَّثَتْنِي حَفْصَةُ، أَنَّهُ كَانَ إِذَا أَذَّنَ الْمُؤَذِّنُ وَطَلَعَ الْفَجْرُ صَلَّى رَكْعَتَيْنِ".
صحیح بخاری · Hadith 1181
Hafsa told me that the Prophet used to offer two Rakat after the call maker had made the Adhan and the day had dawned.
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020