Muhammad 

1 Those who disbelieve (in the Oneness of Allah, and in the Message of Prophet Muhammad SAW ), and hinder (men) from the Path of Allah (Islamic Monotheism), He will render their deeds vain . 
2 But those who believe and do righteous good deeds, and believe in that which is sent down to Muhammad (SAW), for it is the truth from their Lord, He will expiate from them their sins,