Sayyiduna Abu Hurairah (may Allah be pleased with him) said: The Messenger of Allah (peace and blessings be upon him) said:“Indeed, the imam is appointed so that you may follow him. When he says «الله اكبر» , then you should say «الله اكبر» after him. When he goes into bowing (ruku‘), then you should also bow. And when he goes into prostration (sajdah), then you should also prostrate. And when he (the imam) says «سَمِعَ اللّٰهُ لِمَنْ حَمِدَهُ» , then you should say «اللّٰهُمَّ رَبَّنَا لَكَ الْحَمْدُ» . And if he prays standing, then you should also pray standing, and if he leads the prayer sitting, then all of you should also pray sitting.”