حَدَّثَنَا هِشَامُ بْنُ عَمَّارٍ وَعُثْمَانُ بْنُ أَبِي شَيْبَةَ قَالَا حَدَّثَنَا إِسْمَعِيلُ بْنُ عَيَّاشٍ عَنْ عُبَيْدِ اللَّهِ بْنِ عُبَيْدٍ عَنْ زُهَيْرِ بْنِ سَالِمٍ الْعَنْسِيِّ عَنْ عَبْدِ الرَّحْمَنِ بْنِ جُبَيْرِ بْنِ نُفَيْرٍ عَنْ ثَوْبَانَ قَالَ سَمِعْتُ رَسُولَ اللَّهِ صَلَّی اللَّهُ عَلَيْهِ وَسَلَّمَ يَقُولُ فِي کُلِّ سَهْوٍ سَجْدَتَانِ بَعْدَ مَا يُسَلِّمُ
ابن ماجہ · Hadith 1219
It was narrated that Thawban said: "I heard the Messenger of Allah SAW say: 'For every mistake there are two prostrations, after saying the Salam.''' (Hasan).
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020