‏الصلاة : Hadeeth No:1900 Jabir b. 'Abdullah reported that a person came (in the Mosque) while the Prophet of Allaah (sallAllaahu alayhi wa sallam) was delivering the sermon on Friday (standing) on the pulpit. He (the Prophet) said to him: Have you offered two rak'ahs? He said: No. Upon this he said: Then observe (them)....

‏الإيمان : Hadeeth No:124 It is narrated on the authority of Jarir b. 'Abdullah that the Prophet of Allaah (may peace and blessings be upon him) asked him on the occasion of the Farewell Pilgrimage to make the people silent and then said: Do not return to unbelief after me by striking the necks of one another....