And We did not send any messenger but with the language of his people, so that he might explain to them clearly; then Allah makes whom He pleases err and He guides whom He pleases and He is the Mighty, the Wise.

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

And my brother, Haroun, he is more eloquent of tongue than I, therefore send him with me as an aider, verifying me: surely I fear that they would reject me.