Hadith #769 (Sahih al-Bukhari)
Book: Call to Prayers (Adhaan)
Narrator(s): Mutarrif bin 'Abdullah
Grade: Sahih

`Imran bin Husain and I offered the prayer behind `Ali bin Abi Talib. When `Ali prostrated, he said the Takbir, when he raised his head, he said the Takbir and when he got up for the third rak`a he said the Takbir. On completion of the prayer `Imran took my hand and said, “This (i.e. `Ali) made me remember the prayer of Muhammad” Or he said, “He led us in a prayer like that of Muhammad.”

Source: https://parallelquran.com/hadith/sahih-al-bukhari-769/

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Hadith #808 (Sahih al-Bukhari)
Book: Call to Prayers (Adhaan)
Narrator(s): Mutarrif bin 'Abdullah
Grade: Sahih

`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).

Source: https://parallelquran.com/hadith/sahih-al-bukhari-808/