Surah Al-Qasas (The Stories), Verse 34

وَاَخِیْ هٰرُوْنُ هُوَ اَفْصَحُ مِنِّیْ لِسَانًا فَاَرْسِلْهُ مَعِیَ رِدْاً یُّصَدِّقُنِیْۤ اِنِّیْۤ اَخَافُ اَنْ یُّكَذِّبُوْنِ ۟

Wa akhee Haaroonu huwa afsahu minnee lisaanan fa arsilhu ma'iya rid ai yusaddiquneee innee akhaafu ai yukazziboon

“"And my brother Aaron - He is more eloquent in speech than I: so send him with me as a helper, to confirm (and strengthen) me: for I fear that they may accuse me of falsehood."”

Quran 28:34 (Yusuf Ali Translation)