Messenger of Allah sat with him and taught him the Adhan word for word. Ibrahim said, "It is the same as our Adhan." Bishr said: "So I said to him, 'Repeat it to me.' So he described the Adhan with At-Tarjl'."  

أَنَّ رَسُولَ اللَّهِ ﷺ أَقْعَدَهُ وَأَلْقَى عَلَيْهِ الأَذَانَ حَرْفًا حَرْفًا قَالَ إِبْرَاهِيمُ مِثْلَ أَذَانِنَا قَالَ بِشْرٌ فَقُلْتُ لَهُ أَعِدْ عَلَىَّ فَوَصَفَ الأَذَانَ بِالتَّرْجِيعِ  

the Prophet taught him the Adhan with nineteen phrases, and the Iqamah with seventeen phrases.  

أَنَّ النَّبِيَّ ﷺ عَلَّمَهُ الأَذَانَ تِسْعَ عَشْرَةَ كَلِمَةً وَالإِقَامَةَ سَبْعَ عَشْرَةَ كَلِمَةً