حَدَّثَنَا حَجَّاجُ بْنُ مِنْهَالٍ ، حَدَّثَنَا حَمَّادُ بْنُ سَلَمَةَ ، عَنْ ثَابِتٍ ، عَنْ أَنَسٍ : أَنّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ كَانَ" يُغِيرُ عِنْدَ صَلَاةِ الْفَجْرِ، وَكَانَ يَسْتَمِعُ، فَإِنْ سَمِعَ أَذَانًا، أَمْسَكَ، وَإِنْ لَمْ يَسْمَعْ أَذَانًا، أَغَارَ "

Hajjaj bin Minhal narrated to us, Hammad bin Salamah narrated to us, on the authority of Thabit, on the authority of Anas: that the Prophet, may God bless him and grant him peace, used to change his voice when praying Fajr, and he would listen, and if he heard the call to prayer, he would stop, and if he did not hear the call to prayer, he would fall asleep.”