(25) باب التَّحَرِّي
It was narrated that 'Abdullah said:
"The Messenger of Allah (ﷺ) said: 'If one of you is not sure about his prayer, let him estimate and prostrate twice after he has finished." (PT)
Reference (PT): Sunan an-Nasa'i 1241 (PT)
In-book reference (PT): Book 13, Hadith 63 (PT)
English translation (PT): Vol. 2, Book 13, Hadith 1242 (PT)