And if they [try to] argue with thee, say [only]: God knows best what you are doing."

If they do wrangle with thee, say, "God knows best what it is ye are doing."

And if they wrangle with thee, say: Allah is Best Aware of what ye do.

And if they contend with thee, say: Allah best knows what you do.

And if they dispute with you, then say, " Allah is most knowing of what you do.