ßÊÇÈ ÇáÃÐÇä : Hadeeth No:690 : Abu Huraira:
The Prophet said, "The Imam is (appointed) to be followed. So do not differ from him, bow when he bows, and say, "Rabbana-lakal hamd" if he says "Sami'a-l-lahu Liman hamida"; and if he prostrates, prostrate (after him), and if he prays sitting, pray sitting all together, and straighten the rows for ...