Hadith 2:56
Shadh (Al-Albani)
This tradition has also been transmitted through another chain of narrators by Dhu Mikhbar, the nephew of the Negus. This version adds:
"He (Bilal) called for prayer unhurriedly."
حَدَّثَنَا مُؤَمَّلُ بْنُ الْفَضْلِ، حَدَّثَنَا الْوَلِيدُ، عَنْ حَرِيزٍ، - يَعْنِي ابْنَ عُثْمَانَ - عَنْ يَزِيدَ بْنِ صَالِحٍ، عَنْ ذِي، مِخْبَرِ بْنِ أَخِي النَّجَاشِيِّ فِي هَذَا الْخَبَرِ قَالَ فَأَذَّنَ وَهُوَ غَيْرُ عَجِلٍ
Original Reference: Sunan Abi Dawud 446