كتاب الصلاة
2  
The Book of Prayer
Narrated [Ibn 'Umar (RA)]:
(This Hadith is) attributed to the Prophet (ﷺ) "There is no Sahw (prostration for forgetfulness) in the prayer in time of danger." [ad-Daraqutni reported it through a weak chain of narrators].
وَعَنْهُ مَرْفُوعًا: { لَيْسَ فِي صَلَاةِ اَلْخَوْفِ سَهْوٌ } أَخْرَجَهُ اَلدَّارَقُطْنِيُّ بِإِسْنَادٍ ضَعِيفٍ 1‏ .‏


‏1 ‏- ضعيف.‏ رواه الدارقطني (2/58/1)‏ وضعفه.‏

Sunnah.com reference : Book 2, Hadith 409
English translation : Book 2, Hadith 482
Arabic reference : Book 2, Hadith 484