68:51 wa iy yakaadul-ladhiyna kafaruu la yuzliquunaka bi abSaarihim lam-maa sami'Udh dhikra wa yaquuluuna in-nahuu la majnuun

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Ahmed Raza Khan: Mohammed Aqib Qadri:
And indeed the disbelievers seem as if they would topple you with their evil gaze when they hear the Qur'an, and they say, "He is indeed insane."

Yusuf Ali:
And the Unbelievers would almost trip thee up with their eyes when they hear the Message; and they say: "Surely he is possessed!"

Pickthal:
And lo! those who disbelieve would fain disconcert thee with their eyes when they hear the Reminder, and they say: Lo! he is indeed mad;