Al-Isra' - ১৭:১০৫

وَبِالْحَقِّ أَنزَلْنَاهُ وَبِالْحَقِّ نَزَلَ وَمَا أَرْسَلْنَاكَ إِلاَّ مُبَشِّرًا وَنَذِيرًا
[17:105]
And with truth have We revealed it, and with truth did it come; and We have not sent you but as the giver of good news and as a warner.
We sent down the (Qur'an) in Truth, and in Truth has it descended: and We sent thee but to give Glad Tidings and to warn (sinners).
With truth have We sent it down, and with truth hath it descended. And We have sent thee as naught else save a bearer of good tidings and a warner.