Al-Qasas 28:34

Waakhee haroonu huwa afsahuminnee lisanan faarsilhu maAAiya rid-an yusaddiquneeinnee akhafu an yukaththiboon

And my brother Aaron is more fluent than me in tongue, so send him with me as support, verifying me. Indeed, I fear that they will deny me."

And my brother Hārūn is more eloquent than me in speech; so send him with me as a helper to bear me out. I am afraid, they will give the lie to me.”