Qur'an 3:102

يَـٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوا۟ ٱتَّقُوا۟ ٱللَّهَ حَقَّ تُقَاتِهِۦ وَلَا تَمُوتُنَّ إِلَّا وَأَنتُم مُّسْلِمُونَ

“O you who have believed, fear Allāh as He should be feared and do not die except as Muslims [in submission to Him].”

Aal-i-Imraan 3:102 · Saheeh International