Surah Ya-Sin (Ya-Sin), Verse 14

اِذْ اَرْسَلْنَاۤ اِلَیْهِمُ اثْنَیْنِ فَكَذَّبُوْهُمَا فَعَزَّزْنَا بِثَالِثٍ فَقَالُوْۤا اِنَّاۤ اِلَیْكُمْ مُّرْسَلُوْنَ ۟

Iz arsalnaaa ilaihimusnaini fakazzaboohumaa fa'azzaznaa bisaalisin faqaalooo innaaa ilaikum mursaloon

“When We (first) sent to them two messengers, they rejected them: But We strengthened them with a third: they said, "Truly, we have been sent on a mission to you."”

Quran 36:14 (Yusuf Ali Translation)