The strengthening of the rows

 267. Abu Mas´ud narrated: The Messenger of Allah salla alayhi wa sallam used to touch our shoulders in Salat (prayer) and say: ´´Keep straight, do not stand in disarray, lest there be dissension in your hearts. Let those of intellects stand behind me, then those who are next to them, then those who are next to them.´´ Abu Mas´ud said, ´´Now-a-days there is severe dissension among you.´´