17:45 wa idhaa qara'tal qur'aana ja'Alnaa baynaka wa baynal-ladhiyna laa yu'minuuna bil aakhirati Hijaabam mastuuraa

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Ahmed Raza Khan: Mohammed Aqib Qadri:
And when you read the Qur'an O dear Prophet (Mohammed - peace and blessings upon him), We created an invisible barrier between you and those who do not believe in the Hereafter.

Yusuf Ali:
When thou dost recite the Qur'an, We put, between thee and those who believe not in the Hereafter, a veil invisible:

Pickthal:
And when thou recitest the Qur'an we place between thee and those who believe not in the Hereafter a hidden barrier;