Surat Ash-Shu'araa (The Poets) - الشعراء

وَيَضِيقُ صَدْرِى وَلَا يَنطَلِقُ لِسَانِى فَأَرْسِلْ إِلَىٰ هَٰرُونَ ﴿١٣﴾

And by breast straitens, and my tongue is not eloquent, therefore send Thou to Haroun (to help me);