Surah Az-Zumar — Ayah 13 (39:13)
قُلۡ إِنِّيٓ أَخَافُ إِنۡ عَصَيۡتُ رَبِّي عَذَابَ يَوۡمٍ عَظِيمٖ ١٣
English translation (Saheeh International)
Say, "Indeed I fear, if I should disobey my Lord, the punishment of a tremendous Day."
Brief commentary
Say, O Messenger: I fear, if I go against Allah and do not follow him, the punishment of a great day, which is the day of resurrection.