"At the time of the Messenger of Allah ﷺ the phrases of the Adhan were said twice and the phrases of the Iqamah were said once, except that you should say: 'Qad Qamatis-Salah, Qad Qamatis-Salah (prayer is about to begin, prayer is about to begin).'" (Using translation from Nasāʾī 628)
كَانَ الْأَذَانُ عَلَى عَهْدِ النَّبِيِّ ﷺ مَثْنَى مَثْنَى وَالْإِقَامَةُ مَرَّةً إِلَّا أَنَّكَ تَقُولُ قَدْ قَامَتِ الصَّلَاةُ قَدْ قَامَتِ الصَّلَاةُ
"I asked Ibn 'Umar about the Adhan and he said: 'At the time of the Messenger of Allah ﷺ, the phrases of the Adhan were recited twice and the phrases of Iqamah once, except that you should say (the phrase) Qad qamat is-salah (prayer is about to begin)twice. When we heard 'prayer is about to begin' we would perform Wudu' and go out to pray.'"
كَانَ الأَذَانُ عَلَى عَهْدِ رَسُولِ اللَّهِ ﷺ مَثْنَى مَثْنَى وَالإِقَامَةُ مَرَّةً مَرَّةً إِلاَّ أَنَّكَ إِذَا قُلْتَ قَدْ قَامَتِ الصَّلاَةُ قَالَهَا مَرَّتَيْنِ فَإِذَا سَمِعْنَا قَدْ قَامَتِ الصَّلاَةُ تَوَضَّأْنَا ثُمَّ خَرَجْنَا إِلَى الصَّلاَةِ
"At the time of the Messenger of Allah ﷺ the phrases of the Adhan were said twice and the phrases of the Iqamah were said once, except that you should say: 'Qad Qamatis-Salah, Qad Qamatis-Salah (prayer is about to begin, prayer is about to begin).'"
كَانَ الأَذَانُ عَلَى عَهْدِ رَسُولِ اللَّهِ ﷺ مَثْنَى مَثْنَى وَالإِقَامَةُ مَرَّةً مَرَّةً إِلاَّ أَنَّكَ تَقُولُ قَدْ قَامَتِ الصَّلاَةُ قَدْ قَامَتِ الصَّلاَةُ
"At the time of the Messenger of Allah ﷺ the phrases of the Adhan were said twice and the phrases of the Iqamah were said once, except that you should say: 'Qad Qamatis-Salah, Qad Qamatis-Salah (prayer is about to begin, prayer is about to begin).'" (Using translation from Nasāʾī 628)
كَانَ الْأَذَانُ عَلَى عَهْدِ رَسُولِ اللهِ ﷺ مَثْنَى مَثْنَى وَالْإِقَامَةُ وَاحِدَةً غَيْرَ أَنَّ الْمُؤَذِّنَ كَانَ إِذَا قَالَ قَدْ قَامَتِ الصَّلَاةُ قَالَ قَدْ قَامَتِ الصَّلَاةُ مَرَّتَيْنِ
[Machine] The adhan during the time of the Messenger of Allah ﷺ was said in pairs, and the iqamah was said once, except that the caller, when saying, "Prayer is about to begin," would say it twice.
كَانَ الْأَذَانُ عَلَى عَهْدِ رَسُولِ اللهِ ﷺ مَثْنَى مَثْنَى وَالْإِقَامَةُ مَرَّةً مَرَّةً غَيْرَ أَنَّ الْمُؤَذِّنَ إِذَا قَالَ قَدْ قَامَتِ الصَّلَاةُ قَالَ مَرَّتَيْنِ
"كَانَ بلاَلٌ يُثنِّي الأَذَانَ وَيُوتِرُ الإقَامةَ إلى قَوْلِهِ: قَدْ قَامَتِ الصَّلاةُ، قَدْ قَامَتِ الصَّلاَةُ".