26:13 wa yaDiyqu Sadriy wa laa yanTaliqu lisaaniy fa arsil ilaa haaruun

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Ahmed Raza Khan: Mohammed Aqib Qadri:
"I feel hesitant, and my tongue does not speak fast, therefore make Haroon also a Noble Messenger."

Yusuf Ali:
"My breast will be straitened. And my speech may not go (smoothly): so send unto Aaron.

Pickthal:
And I shall be embarrassed, and my tongue will not speak plainly, therefor send for Aaron (to help me).