Sahih Bukhari 730

Narrated Zaid bin Thabit: Allah's Apostle made a small room in the month of Ramadan (Sa`id said, I think that Zaid bin Thabit said that it was made of a mat ) and he prayed there for a few nights, and so some of his companions prayed behind him...

Narrated Anas bin Malik Al-Ansari: Allah's Apostle rode a horse and fell down and the right side of his body was injured. On that day he prayed one of the prayers sitting and we also prayed behind him sitting. When the Prophet finished the prayer..

Narrated Anas bin Malik: Allah's Apostle fell from a horse and got injured so he led the prayer sitting and we also prayed sitting. When he completed the prayer he said, The Imam is to be followed; if he says Takbir then say Takbir, bow if he..

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 l-lahu liman hamidah', say, ' Rabbana wa laka l-hamd', prostrate if he prostrates and pray sitting altogether..