It was narrated from Abu Mahdhurah that the Messenger of Allah ﷺ taught him the Adhan with nineteen phrases and the Iqamah with seventeen phrases, then Abu Mahdhurah counted them as nineteen and seventeen. (Using translation from Nasāʾī 630)
أَنَّ رَسُولَ اللهِ ﷺ «عَلَّمَهُ الْأَذَانَ تِسْعَ عَشْرَةَ وَالْإِقَامَةَ سَبْعَ عَشْرَةَ كَلِمَةً ثُمَّ عَدَّهُنَّ أَبُو مَحْذُورَةَ تِسْعَ عَشْرَةَ وَسَبْعَ عَشْرَةَ»