Surah Al-An'am — Ayah 15 (6:15)
قُلۡ إِنِّيٓ أَخَافُ إِنۡ عَصَيۡتُ رَبِّي عَذَابَ يَوۡمٍ عَظِيمٖ ١٥
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: If I go against Allah by committing that which He has prohibited (such as associating partners with Him) or by leaving out what He has instructed me to do (such as having faith and doing good actions), then I fear that He will punish me with a severe punishment on the Day of Rising.