Sahih al-Bukhari 812
In-book no 812حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، قَالَ حَدَّثَنَا بَكْرٌ، عَنْ جَعْفَرِ بْنِ رَبِيعَةَ، عَنِ الأَعْرَجِ، عَنْ عَبْدِ اللَّهِ بْنِ مَالِكٍ ابْنِ بُحَيْنَةَ، قَالَ صَلَّى بِنَا رَسُولُ اللَّهِ صلى الله عليه وسلم الظُّهْرَ فَقَامَ وَعَلَيْهِ جُلُوسٌ، فَلَمَّا كَانَ فِي آخِرِ صَلاَتِهِ سَجَدَ سَجْدَتَيْنِ وَهْوَ جَالِسٌ.
Narrated `Abdullah bin Malik bin Buhaina: Once Allah's Messenger (ﷺ) led us in the Zuhr prayer and got up (after the prostrations of the second rak`a) although he should have sat (for the Tashahhud). So at the end of the prayer, he prostrated twice while sitting (prostrations of Sahu).