Sahih al-Bukhari
Sahih al-Bukhari 4232
قَالَ أَبُو بُرْدَةَ عَنْ أَبِي مُوسَى، قَالَ النَّبِيُّ صلى الله عليه وسلم " إِنِّي لأَعْرِفُ أَصْوَاتَ رُفْقَةِ الأَشْعَرِيِّينَ بِالْقُرْآنِ، حِينَ يَدْخُلُونَ بِاللَّيْلِ، وَأَعْرِفُ مَنَازِلَهُمْ مِنْ أَصْوَاتِهِمْ بِالْقُرْآنِ بِاللَّيْلِ، وَإِنْ كُنْتُ لَمْ أَرَ مَنَازِلَهُمْ حِينَ نَزَلُوا بِالنَّهَارِ، وَمِنْهُمْ حَكِيمٌ، إِذَا لَقِيَ الْخَيْلَ ـ أَوْ قَالَ الْعَدُوَّ ـ قَالَ لَهُمْ إِنَّ أَصْحَابِي يَأْمُرُونَكُمْ أَنْ تَنْظُرُوهُمْ ".
Unreviewed translation. All hadiths in this collection are available in five languages. Titles and introductions may remain in Arabic.
Abū Burda related from Abū Mūsā that the Prophet said: “I recognize the voices of the Ashʿarī group reciting the Qurʾān as they enter at night, and I can identify their homes by their voices reciting the Qurʾān at night, even though I have not seen their homes when they arrive there by day. Among them is Ḥakīm. When he encounters a cavalry force—or, according to another wording, the enemy—he says to them: ‘My companions ask you to wait for them.’”
Notes and open questions — unreviewed
The source preserves an alternative wording: “the cavalry” or “the enemy.”