(25) باب التَّحَرِّي
It was narrated that Abdullah bin Ja'far said:
"The Messenger of Allah (ﷺ) said: 'Whoever has doubt during his prayer, let him prostrate twice after he has said the taslim'". (DE)
Reference (DE): Sunan an-Nasa'i 1248 (DE)
In-book reference (DE): Book 13, Hadith 70 (DE)
English translation (DE): Vol. 2, Book 13, Hadith 1249 (DE)