BAYHAQI 1982:
from Ḥafṣ b. ʿUmar b. Saʿd al-Muʾadhhin —
[Machine] Saad used to give the call to prayer for the Messenger of Allah ﷺ . Hafs narrated that my family told me that Bilal came to the Messenger of Allah ﷺ to give the call to prayer for Fajr prayer, and they said that he was asleep. So, Bilal called out in a loud voice, "Prayer is better than sleep." So, it was confirmed for the Fajr prayer.
البيهقي ١٩٨٢:
عن حفص بن عمر بن سعد المءذهن —
أَنَّ سَعْدًا كَانَ يُؤَذِّنُ لِرَسُولِ اللهِ ﷺ قَالَ حَفْصٌ فَحَدَّثَنِي أَهْلِي أَنَّ بِلَالًا أَتَى رَسُولَ اللهِ ﷺ لَيُؤْذِنَهُ بِصَلَاةِ الْفَجْرِ فَقَالُوا إِنَّهُ نَائِمٌ فَنَادَى بِلَالٌ بِأَعْلَى صَوْتِهِ الصَّلَاةُ خَيْرٌ مِنَ النَّوْمِ فَأُقِرَّتْ فِي صَلَاةِ الْفَجْرِ
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