Yusuf Ali
But truly (Revelation) is a cause of sorrow for the Unbelievers.

Sahih International
And indeed, it will be [a cause of] regret upon the disbelievers.

Shakir
And most surely it is a great grief to the unbelievers.

Pickthall
And lo! it is indeed an anguish for the disbelievers.

محمد جالندھری
نیز یہ کافروں کے لئے (موجب) حسرت ہے