6:48 We do not send the messengers except as deliverers of good news, as well as warners. Those who believe and reform have nothing to fear, nor will they grieve.
6:49 As for those who reject our revelations, they incur the retribution for their wickedness.
6:50 Say, “I do not say to you that I possess the treasures of GOD. Nor do I know the future. Nor do I say to you that I am an angel. I simply follow what is revealed to me.” Say, “Is the blind the same as the seer? Do you not reflect?”
6:51 And preach with this (Quran) to those who reverence the summoning before their Lord – they have none beside Him as a Lord and Master, nor an intercessor – that they may attain salvation.
6:52 And do not dismiss those who implore their Lord day and night, devoting themselves to Him alone. You are not responsible for their reckoning, nor are they responsible for your reckoning. If you dismiss them, you will be a transgressor.
6:53 We thus test the people by each other, to let them say (mockingly), “Are these the people among us who are blessed by GOD?” Is GOD not aware of the appreciative ones?
6:54 When those who believe in our revelations come to you, you shall say, “Salamun `Alaykum (Peace be upon you). Your Lord has decreed that mercy is His attribute. Thus, anyone among you who commits a transgression out of ignorance, and repents thereafter and reforms, then He is Forgiving, Most Merciful.”
6:55 We thus explain the revelations, and point out the ways of the wicked.
6:56 Say, “I am forbidden from worshiping what you worship besides GOD.” Say, “I will not follow your opinions. Otherwise, I will go astray, and not be guided.”
6:57 Say, “I have solid proof from my Lord, and you have rejected it. I do not control the retribution you challenge me to bring. Judgment belongs with GOD alone. He narrates the truth, and He is the best judge.”
6:58 Say, “If I controlled the retribution you challenge me to bring, the whole matter would have been terminated long ago. GOD knows best who the wicked are.”
6:19 Say, “Whose testimony is the greatest?” Say, “GOD’s. He is the witness between me and you that this Quran* has been inspired to me, to preach it to you and whomever it reaches. Indeed, you bear witness that there are other gods* beside GOD.” Say, “I do not testify as you do; there is only one god, and I disown your idolatry.”
Since we have to say Salamun Alaykum to believers can we also say this to non-believers?
God is only stating that to submitters this is our greeting, but it is not saying that the opposite is condemned.
28:55 When they come across vain talk, they disregard it and say, “We are responsible for our deeds, and you are responsible for your deeds. Peace be upon you. We do not wish to behave like the ignorant ones.”
Abraham greeted strangers with “peace” even though he did not know they were believers or not:
51:25 They visited him, saying, “Peace.” He said, “Peace to you, strangers!”
6:52 shows that we are responsible for our own necks…
5:105 O you who believe, you should worry only about your own necks. If the others go astray, they cannot hurt you, as long as you are guided. To GOD is your ultimate destiny, all of you, then He will inform you of everything you had done.
11:27 The leaders who disbelieved among his people said, “We see that you are no more than a human being like us, and we see that the first people to follow you are the worst among us. We see that you do not possess any advantage over us. Indeed, we think you are liars.”
11:28 He said, “O my people, what if I have a solid proof from my Lord? What if He has blessed me out of His mercy, though you cannot see it? Are we going to force you to believe therein?