Allah's Messenger (ﷺ) once led us in a prayer and offered two rak`at and got up (for the third rak`a) without
sitting (after the second rak`a). The people also got up with him, and when he was about to finish his
prayer, we waited for him to finish the prayer with Taslim but he said Takbir before Taslim and
performed two prostrations while sitting and then finished the prayer with Taslim.
Sahih al-Bukhari Book 22, Hadith 1