(Those who disbelieve) in Muhammad (pbuh) and in the Qur'an (say: If only a portent were sent down upon him) why is Muhammad (pbuh) not given a sign (from his Lord!) to prove his prophethood, as was given to earlier messengers, as he claims. (Say) O Muhammad: (Lo! Allah sendeth whom He will) whoever deserves it (astray) from His religion, (and guideth unto Himself) to His religion (all who turn (unto Him)) all those who betake themselves to Him,