Qur'ān 10:53 · Yunus (يونس)

۞ وَيَسْتَنۢبِـُٔونَكَ أَحَقٌّ هُوَ ۖ قُلْ إِى وَرَبِّىٓ إِنَّهُۥ لَحَقٌّۭ ۖ وَمَآ أَنتُم بِمُعْجِزِينَ

And they ask information of you, [O Muhammad], "Is it true?" Say, "Yes, by my Lord. Indeed, it is truth; and you will not cause failure [to Allah]."