Sahih al-Bukhari 842
Book 10: Call to Prayers (Adhaan) · Narrated by Ibn `Abbas
Arabic
حَدَّثَنَا عَلِيُّ بْنُ عَبْدِ اللَّهِ، قَالَ حَدَّثَنَا سُفْيَانُ، {عَنْ عَمْرٍو،} قَالَ أَخْبَرَنِي أَبُو مَعْبَدٍ، عَنِ ابْنِ عَبَّاسٍ ـ رضى الله عنهما ـ قَالَ كُنْتُ أَعْرِفُ انْقِضَاءَ صَلاَةِ النَّبِيِّ صلى الله عليه وسلم بِالتَّكْبِيرِ.
English translation
Narrated Ibn `Abbas:I used to recognize the completion of the prayer of the Prophet (ﷺ) by hearing Takbir
Reference: Sahih al-Bukhari 842, Book of Call to Prayers (Adhaan). English translation by Dr. Muhammad Muhsin Khan.