(76) باب السَّلاَمِ بَعْدَ سَجْدَتَىِ السَّهْوِ
It was narrated from Abu Hurairah that:
"The Messenger of Allah (ﷺ) said the salam then he performed two prostrations of forgetfulness while he was still sitting, then he said the salam." He said: He mentioned it in the hadith of Dhul-Yadain.
Reference: Sunan an-Nasa'i 1330
In-book reference: Book 13, Hadith 152
English translation: Vol. 2, Book 13, Hadith 1331