And when those who opened their hearts’ ears and their minds’ eyes to Our revelations and signs come to you O Muhammad, address them with the expression of good will and courtesy "peace be upon you" and proclaim to them what will please them to hear, thus: " Allah ascribed mercy unto Himself as an attribute to Him to the end that he who commits himself among you to an evil line of conduct in ignorance and in lowliest plight stands repentant thereafter and henceforth imprints his deeds with wisdom and piety shall find Allah Ghafurun and` Rahimun".