‏الصلاة : Hadeeth No:1363 Abu Huraira reported Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying: Prayer said in a congregation is equivalent to twenty-five (prayers) as compared with the prayer said by a single person....

‏السلام : Hadeeth No:5413 Jabir reported Allaah's Prophet (may peace he upon him) as saying: None amongst you should make his brother stand on Friday (during the congregational prayer) and then occupy his-place. but he should only say to him (Accommodate me)....