Quran 96:15 from Surah Al-Alaq on Divine Marvels.
كـَلَّا لَئِن لَّمۡ يَنتَهِ لَنَسۡفَعَۢا بِٱلنَّاصِيَةِ
English translation: Nay! If not he desists surely We will drag him by the forelock
Transliteration: kalla la-in lam yantahi lanasfa'an bil-nasiyati