Sura 10 Yunus (Jonas), aya 53

1. وَيَسْتَنْبِئُونَكَ أَحَقٌّ هُوَ ۖ قُلْ إِي وَرَبِّي إِنَّهُ لَحَقٌّ ۖ وَمَا أَنْتُمْ 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)."

   10:53

Tafsiri: Saheeh International