إِنَّهُمْ إِن يَظْهَرُوا عَلَيْكُمْ يَرْجُمُوكُمْ أَوْ يُعِيدُوكُمْ فِي مِلَّتِهِمْ وَلَن تُفْلِحُوا إِذًا أَبَدًا
[18:20]
For surely if they prevail against you they would stone you to death or force you back to their religion, and then you will never succeed.
"For if they should come upon you, they would stone you or force you to return to their cult, and in that case ye would never attain prosperity."
For they, if they should come to know of you, will stone you or turn you back to their religion; then ye will never prosper.