Narrated Abu Huraira: The Prophet said, "The Imam is to be followed. Say the Takbir when he says it; bow if he bows; if he says 'Sami a-llahu Liman hamida', say, ' Rabbana wa-laka-l-hamd', prostrate if he prostrates and pray sitting altogether if he prays sitting."
— Sahih Bukhari, Volume 1, Book 12: Characteristics of Prayer, Hadith #701
Narrated Abu Huraira: The Prophet said, "The Imam is to be followed. Say the Takbir when he says it; bow if he bows; if he says 'Sami a-llahu Liman hamida', say, ' Rabbana wa-laka-l-hamd', prostrate if he prostrates and pray sitting altogether if he prays sitting."
This hadith is from the book of Characteristics of Prayer in Sahih Bukhari, compiled by Imam al-Bukhari. It is hadith number 701 in book 12 of volume 1.
This hadith is referenced in the following topics: How to Pray.
