Quran english Al Qasas 86

وما كنت ترجو أن يلقى إليك الكتاب إلا رحمة من ربك فلا تكونن ظهيرا للكافرين

Wama kunta tarjoo an yulqailayka alkitabu illa rahmatan min rabbikafala takoonanna thaheeran lilkafireen

 
Sahih International
And you were not expecting that the Book would be conveyed to you, but [it is] a mercy from your Lord. So do not be an assistant to the disbelievers.
Muhsin Khan
And you were not expecting that the Book (this Quran) would be sent down to you, but it is a mercy from your Lord. So never be a supporter of the disbelievers.
Pickthall
Thou hadst no hope that the Scripture would be inspired in thee; but it is a mercy from thy Lord, so never be a helper to the disbelievers.
Yusuf Ali
And thou hadst not expected that the Book would be sent to thee except as a Mercy from thy Lord: Therefore lend not thou support in any way to those who reject (Allah’s Message).
Shakir
And you did not expect that the Book would be inspired to you, but it is a mercy from your Lord, therefore be not a backer-up of the unbelievers.
Dr. Ghali
And in no way did you hope that the Book should be cast to you, except it be a mercy from your Lord; so definitely do not be a backer of the disbelievers.