Surah Al-Hujurat (The Private Quarters), Verse 17

یَمُنُّوْنَ عَلَیْكَ اَنْ اَسْلَمُوْا قُلْ لَّا تَمُنُّوْا عَلَیَّ اِسْلَامَكُمْ بَلِ اللّٰهُ یَمُنُّ عَلَیْكُمْ اَنْ هَدٰىكُمْ لِلْاِیْمَانِ اِنْ كُنْتُمْ صٰدِقِیْنَ ۟

Yamunnoona 'alaika an aslamoo qul laa tamunnoo 'alaiya Islaamakum balillaahu yamunnu 'alaikum an hadaakum lil eemaani in kuntum saadiqeen

“They impress on thee as a favour that they have embraced Islam. Say, "Count not your Islam as a favour upon me: Nay, Allah has conferred a favour upon you that He has guided you to the faith, if ye be true and sincere.”

Quran 49:17 (Yusuf Ali Translation)