Sahih Al Bukhari Hadith Number 826

Narrated Mutarrif: `Imran and I prayed behind `Ali bin Abi Talib and he said Takbir on prostrating, on rising and on getting up after the two rak`at (i.e. after the second rak`a). When the prayer was finished, `Imran took me by the hand and said, “He (`Ali) has prayed the prayer of Muhammad” (or said, “He made us remember the prayer of Muhammad).

10  Call to Prayers (Adhaan)
Hadith number 826
Volume no 1
Chapter: 144 (Saying Takbir on rising from the two prostrations)