Qur'an 10:53 · Yunus

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

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