Sahih al-Bukhari — Accepting Information Given by a Truthful Person — Hadith No: 7250
Translation
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)