Surah Al-Baqarah (The Cow), Verse 208

یٰۤاَیُّهَا الَّذِیْنَ اٰمَنُوا ادْخُلُوْا فِی السِّلْمِ كَآفَّةً وَلَا تَتَّبِعُوْا خُطُوٰتِ الشَّیْطٰنِ اِنَّهٗ لَكُمْ عَدُوٌّ مُّبِیْنٌ ۟

Yaaa ayyuhal lazeena aamanud khuloo fis silmi kaaaffatanw wa laa tattabi'oo khutuwaatish Shaitaan; innahoo lakum 'aduwwum mubeen

“O ye who believe! Enter into Islam whole-heartedly; and follow not the footsteps of the evil one; for he is to you an avowed enemy.”

Quran 2:208 (Yusuf Ali Translation)