(1) باب مَا جَاءَ فِي السَّهْوِ إِذَا قَامَ مِنْ رَكْعَتَىِ الْفَرِيضَةِ
Narrated `Abdullah bin Buhaina:
Allah's Messenger (ﷺ) got up after the second rak`a of the Zuhr prayer without sitting in between (the second and the third rak`at). When he finished the prayer he performed two prostrations (of Sahu) and then finished the prayer with Taslim.
Reference: Sahih al-Bukhari 1225
In-book reference: Book 22, Hadith 2
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 2, Book 22, Hadith 316