سُنَنُ النَّسَائِيِّ
Sunan an-Nasa’i 1772
The Book of Qiyam Al-Lail (The Night Prayer) and Voluntary Prayers During the Day
The time for the two rak'ahs of Fajr, and mentioning the differences reported from Nafi'
أَخْبَرَنَا عَبْدُ اللَّهِ بْنُ إِسْحَاقَ، عَنْ أَبِي عَاصِمٍ، عَنِ ابْنِ جُرَيْجٍ، قَالَ أَخْبَرَنِي مُوسَى بْنُ عُقْبَةَ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، عَنْ حَفْصَةَ أُمِّ الْمُؤْمِنِينَ، أَنَّهَا أَخْبَرَتْهُ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم كَانَ إِذَا سَكَتَ الْمُؤَذِّنُ صَلَّى رَكْعَتَيْنِ خَفِيفَتَيْنِ .
It was narrated from Ibn 'Umar that Hafsah, the Mother of the Believers, : Told him that when the Muaddhin fell silent, Allah's Messenger (ﷺ) would pray two brief rak'ahs.
Sunan an-Nasa'i, 1772Sahih (Darussalam)