26:3
Ash-Shu'ara 3
Surah Ash-Shu'ara (الشعراء), verse 3 — reference 26:3. Arabic text with optional translation and free audio on Al-Qalam.
لَعَلَّكَ بَـٰخِعٌ نَّفْسَكَ أَلَّا يَكُونُوا۟ مُؤْمِنِينَ
laʿallaka bākhiʿun nafsaka allā yakūnū mu'minīna
Perhaps, [O Muḥammad], you would kill yourself with grief that they will not be believers.