Hadithcore
Mishkat al-Masabih, 806

Sa'id b. al-Harith b. al-Mu‘alla said that Abu Sa'id al-Khudri led them in prayer and said the <i>takbir</i> loudly when he raised his head after the prostration, when he prostrated himself, and when he rose at the end of two <i>rak'as</i>, and he said, “Thus did I see the Prophet (ﷺ) do." Bukhari transmitted it.

عَنْ سَعِيدِ بْنِ الْحَارِثِ بْنِ الْمُعَلَّى قَالَ: صَلَّى لَنَا أَبُو سَعِيدٍ الْخُدْرِيُّ فَجَهَرَ بِالتَّكْبِيرِ حِينَ رَفَعَ رَأْسَهُ مِنَ السُّجُودِ وَحِينَ سَجَدَ وَحِينَ رَفَعَ مِنَ الرَّكْعَتَيْنِ وَقَالَ: هَكَذَا رَأَيْتُ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ. رَوَاهُ الْبُخَارِيُّ

References1 variant
In-Book Reference
Book 4, Hadith 234