وَعَنْ عَلِيٍّ رضى الله عنه
قَالَ: قَالَ اَلنَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ -«إِذَا أَتَى أَحَدُكُمْ اَلصَّلَاةَ وَالْإِمَامُ عَلَى حَالٍ، فَلْيَصْنَعْ كَمَا يَصْنَعُ اَلْإِمَامُ»
The Messenger of Allah (sallallahu alayhi wa sallam) said: “If one of you comes to Salat (prayer) and the Imam is at a certain position, he must do as the Imam is doing.”.