كتاب الصلاة
2  
The Book of Prayer
Ahmad added to the end of the above Hadith, the story of BIlal's statement in the Fajr Adhan (morning prayer call):
as-Salatu khairun minan-nawm - "Prayer is better than sleep".
وَزَادَ أَحْمَدُ فِي آخِرِهِ قِصَّةَ قَوْلِ بِلَالٍ فِي آذَانِ اَلْفَجْرِ: { اَلصَّلَاةُ خَيْرٌ مِنَ اَلنَّوْمِ } 1‏ .‏


‏1 ‏- انظر ما قبله.‏

Sunnah.com reference : Book 2, Hadith 33
English translation : Book 2, Hadith 0
Arabic reference : Book 2, Hadith 178