Sunnan
an-Nasai
سنن النسائي
13
The Book of Forgetfulness (In Prayer)
كتاب السهو
Chapter 25: Estimating (what is most likely the case)
باب التَّحَرِّي
Sunnan an-Nasai 1246
It was narrated that 'Abdullah said
"Whoever has doubt, or is not sure, let him estimate what is correct, then let him prostrate twice."أَخْبَرَنَا سُوَيْدُ بْنُ نَصْرٍ، قَالَ أَنْبَأَنَا عَبْدُ اللَّهِ، عَنْ مِسْعَرٍ، عَنِ الْحَكَمِ، عَنْ أَبِي وَائِلٍ، عَنْ عَبْدِ اللَّهِ، قَالَ مَنْ شَكَّ أَوْ أَوْهَمَ فَلْيَتَحَرَّ الصَّوَابَ ثُمَّ لْيَسْجُدْ سَجْدَتَيْنِ .
Grade: Sahih Darussalam