حَدَّثَنَا نَصْرُ بْنُ عَلِيٍّ الْجَهْضَمِيُّ، حَدَّثَنَا عُمَرُ بْنُ عَلِيٍّ، عَنْ خَالِدٍ الْحَذَّاءِ، عَنْ أَبِي قِلاَبَةَ، عَنْ أَنَسٍ، قَالَ أُمِرَ بِلاَلٌ أَنْ يَشْفَعَ، الأَذَانَ وَيُوتِرَ الإِقَامَةَ .
It was narrated that Anas said: "Bilal was commanded to say the phrases of the Adhan twice and the phrases of the Iqamah once." Translation Not Available
Book Ref: Sunan Ibn Majah Book 3 Hadith 730
Web Ref: Sunan Ibn Majah Vol 1 Book 3 Hadith 730