Az-Zumar (39:13)
قُلۡ إِنِّیۤ أَخَافُ إِنۡ عَصَیۡتُ رَبِّی عَذَابَ یَوۡمٍ عَظِیمࣲ
Say: Lo! if I should disobey my Lord, I fear the doom of a tremendous Day.
— Mohammed Marmaduke William Pickthall
Qul inneee akhaafu in 'asaitu Rabbee 'azaaba Yawmin 'azeem