﴿ وَمَا كُنتَ تَرْجُوٓا۟ أَن يُلْقَىٰٓ إِلَيْكَ ٱلْكِتَٰبُ إِلَّا رَحْمَةًۭ مِّن رَّبِّكَ ۖ فَلَا تَكُونَنَّ ظَهِيرًۭا لِّلْكَٰفِرِينَ ﴾

“Now [as for thyself, O believer,] thou couldst never foresee that this divine writ would [one day] be offered to thee: but [it did come to thee] by thy Sustainer’s grace. Hence, never uphold those who deny the truth [of divine guidance],”

And you never expected that the Scripture the Qur’ān would be conferred on you; but it was conferred on you as a mercy from your Lord. So never be a supporter of the disbelievers in that religion of theirs to which they summon you.