(1) بَابُ مَا جَاءَ فِي إِجَازَةِ خَبَرِ الْوَاحِدِ الصَّدُوقِ فِي الأَذَانِ وَالصَّلاَةِ وَالصَّوْمِ وَالْفَرَائِضِ وَالأَحْكَامِ
Narrated Abu Huraira:
Allah's Messenger (ﷺ) finished his prayer after offerings two rak`at only. Dhul-Yaddain asked him whether the prayer had been reduced, or you had forgotten?" The Prophet (ﷺ) said, "Is Dhul-Yaddain speaking the truth?" The people said, "Yes." Then Allah's Messenger (ﷺ) stood up and performed another two rak`at and then finished prayer with Taslim, and then said the Takbir and performed a prostration similar to or longer than his ordinary prostrations; then he raised his head, said Takbir and prostrated and then raised his head (Sahu prostrations).
Reference: Sahih al-Bukhari 7250
In-book reference: Book 95, Hadith 5
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 9, Book 91, Hadith 356