Quran 26:3 from Surah Ash-Shu'araa on Divine Marvels.
لَعَلَّكَ بَٰخِعٞ نَّفۡسَكَ أَلَّا يَكُونُواْ مُؤۡمِنِينَ
English translation: Perhaps you (would) kill yourself that not they become believers
Transliteration: la'allaka bakhi'un nafsaka alla yakunu mu'minina