أَخْبَرَنَا مُحَمَّدُ بْنُ آدَمَ، عَنْ حَفْصٍ، عَنِ الأَعْمَشِ، عَنْ إِبْرَاهِيمَ، عَنْ عَلْقَمَةَ، عَنْ عَبْدِ اللَّهِ، أَنَّ النَّبِيَّ صلى الله عليه وسلم سَلَّمَ ثُمَّ تَكَلَّمَ ثُمَّ سَجَدَ سَجْدَتَىِ السَّهْوِ .
It was narrated from 'Abdullah that: The Prophet (PBUH) said the salam, then he spoke, then he performed two prostrations of forgetfulness. Translation Not Available
Book Ref: Sunan An Nisai Book 13 Hadith 1329
Web Ref: Sunan An Nisai Vol 2 Book 13 Hadith 1330