Sahih Al Bukhari Hadith Number 825

Narrated Sa`id bin Al-Harith: Abu Sa`id led us in the prayer and said the Takbir aloud on arising from the prostration, and on prostrating, on rising again, and on getting up from the second rak`a. Abu Sa`id said, “I saw the Prophet doing the same.”

10  Call to Prayers (Adhaan)
Hadith number 825
Volume no 1
Chapter: 144 (Saying Takbir on rising from the two prostrations)