[3:20] So if they dispute with you, say: 'I have surrendered my countenance to God and whoever follows me': and say to those who have been given the Scripture, and to the uninstructed: 'Have you submitted?' And so if they have submitted, they have been guided, but if they turn their backs, your duty is only to deliver; and God sees His servants.
'Look at them through the eye of [God's] free disposal (taṣrīf) so that your state does not become unsettled at the differences and the disparity of their stages. One who looks at created beings through the eye of [God's] deliberative power (qudra) knows that the One who determines for all, based on what He has chosen for each, is One. Call them publicly when in public and bear witness to Our free disposal to them privately when in private'. Occupy your tongue with counseling them, empty your heart of their talk, and separate your innermost self from witnessing them, for We have not charged you with their affairs except to deliver [the message]. The One who bring about affairs and originates is Us'.