The people mentioned the fire and the bell (they suggested those as signals to indicate the starting of prayers), and by that they mentioned the Jews and the Christians. Then Bilal was ordered to pronounce Adhan for the prayer by saying its wordings twice, and for the Iqama (the call for the actual standing for the prayers in rows) by saying its wordings once. (Iqama is pronounced when the people are ready for the prayer).  

ذَكَرُوا النَّارَ وَالنَّاقُوسَ فَذَكَرُوا الْيَهُودَ وَالنَّصَارَى فَأُمِرَ بِلاَلٌ أَنْ يَشْفَعَ الأَذَانَ وَأَنْ يُوتِرَ الإِقَامَةَ  

The people mentioned the fire and the bell (as means proposed for announcing the time of prayer) and by such a suggestion they referred to the Jews and the Christians. But Bilal was ordered, "Pronounce the words of the Adhan (i.e. call for the prayer) twice and the Iqama once only."  

ذَكَرُوا النَّارَ وَالنَّاقُوسَ فَذَكَرُوا الْيَهُودَ وَالنَّصَارَى فَأُمِرَ بِلاَلٌ أَنْ يَشْفَعَ الأَذَانَ وَأَنْ يُوتِرَ الإِقَامَةَ  

Bilal was commanded (by the Holy Prophet) to repeat the phrases twice in Adhan, and once in lqama.  

أَنْ يَشْفَعَ الأَذَانَ وَيُوتِرَ الإِقَامَةَ  

"Bilal was commanded to say the phrases of the Adhan twice and the phrases of the Iqamah once."  

أَنْ يَشْفَعَ الأَذَانَ وَيُوتِرَ الإِقَامَةَ  

"Bilal was commanded to say the phrases of the Adhan twice and the phrases of the Iqamah once." (Using translation from Ibn Mājah 730)  

أَنْ يَشْفَعَ الْأَذَانَ وَيُوتِرَ الْإِقَامَةَ  

"Bilal was commanded to say the phrases of the Adhan twice and the phrases of the Iqamah once." (Using translation from Ibn Mājah 730)  

«أُمِرَ بِلَالٌ أَنْ يَشْفَعَ الْأَذَانَ وَيُوتِرَ الْإِقَامَةَ»  

"The Messenger of Allah ﷺ commanded Bilal to say the phrases of the Adhan twice and the phrases of the Iqamah once." (Using translation from Nasāʾī 627)  

أَنَّ رَسُولَ اللَّهِ ﷺ «أَمَرَ بِلَالًا أَنْ يَشْفَعَ الْأَذَانَ وَيُوتِرَ الْإِقَامَةَ»  

"Bilal was commanded to say the phrases of the Adhan twice and the phrases of the Iqamah once." (Using translation from Ibn Mājah 730)  

أَنْ يَشْفَعَ الْأَذَانَ وَيُوتِرُ الْإِقَامَةَ»  

"The Messenger of Allah ﷺ commanded Bilal to say the phrases of the Adhan twice and the phrases of the Iqamah once." (Using translation from Nasāʾī 627)  

«أَنَّ رَسُولَ اللَّهِ ﷺ أَمَرَ بِلَالًا أَنْ يَشْفَعَ الْأَذَانَ وَيُوتِرَ الْإِقَامَةَ»  

"The Messenger of Allah ﷺ commanded Bilal to say the phrases of the Adhan twice and the phrases of the Iqamah once." (Using translation from Nasāʾī 627)  

أَنَّ رَسُولَ اللهِ ﷺ «أَمَرَ بِلَالًا أَنْ يَشْفَعَ الْأَذَانَ وَأَنْ يُوتِرَ الْإِقَامَةَ»  

"Bilal was commanded to say the phrases of the Adhan twice and the phrases of the Iqamah once." (Using translation from Ibn Mājah 730)   

أَنْ يشَفَعَ الْأَذَانَ وَيُوتِرَ الْإِقَامَةَ  

"Bilal was commanded to say the phrases of the Adhan twice and the phrases of the Iqamah once." (Using translation from Ibn Mājah 730)   

أَنُّ رَسُولَ اللهِ ﷺ أَمَرَ بِلَالًا أَنْ يَشْفَعَ الْأَذَانَ وَيُوتِرَ الْإِقَامَةَ  

"Bilal was commanded to say the phrases of the Adhan twice and the phrases of the Iqamah once." (Using translation from Ibn Mājah 730)   

أَمَرَ رَسُولُ اللهِ ﷺ بِلَالًا أَنْ يَشْفَعَ الْأَذَانَ وَيُوتِرَ الْإِقَامَةَ  

"عَنْ أَنَسٍ أَنَّ النَّبِي ﷺ أمَرَ بِلاَلًا: أنْ يَشْفَعَ الأذَانَ وَيُوتِرَ الإِقَامَةَ".  

"أمَرَ النبِيّ ﷺ بلاَلًا أنْ يَشْفع الأذَانَ، وَيُوتِرَ الإقَامَةَ".  

"أمِرَ بِلاَلٌ أنْ يَشْفَعَ الأذَانَ وَيُوتِرَ الإقَامَةَ إِلاَّ الإقَامَةَ".  

"أمَرَ رَسُولُ اللهِ ﷺ بِلاَلًا أَنْ يَشْفعَ الأذَانَ وَيُوتِرَ الإِقَامَةَ إِلَى قَوْلِه: قَدْ قَامَتْ الصَّلاَةُ فَإِنَّهَا مَرَّتيْنِ".  

"عَنْ أنَس قَالَ: أمِرَ بِلاَل أنْ يَشْفَعَ الأذَانَ، وَيُوتِر الإِقَامَة".  

"عَنِ ابْنِ عُمَرَ أنَّ النَّبِىَّ ﷺ أمَرَ بِلاَلًا أنْ يَشْفَعَ الأذَانَ، وَيُوتِرَ الإِقَامَةَ".