(25) باب التَّحَرِّي
It was narrated from 'Abdullah bin Ja'far that :
The Messenger of Allah (ﷺ) said: "Whoever has doubt during his prayer, let him prostrate twice after he said the taslim." (RU)
Reference (RU): Sunan an-Nasa'i 1250 (RU)
In-book reference (RU): Book 13, Hadith 72 (RU)
English translation (RU): Vol. 2, Book 13, Hadith 1251 (RU)