Is it permissible to lie for the sake of da’wah to Allaah?
It is not befitting to lie for real or as a joke, and nor for any of you to promise your child something, and then not to fulfil [your promise] to him.
So what do you think of he who falls into repulsion of the truth and finding fault with its people?!
If you see a person upon truth, and another upon falsehood, then you must aid the truth and warn against the falsehood, otherwise [it is as if] you are dead; you do not know [that which is] good and do not detest [that which is] evil.
And look at the wisdom of Allaah and His love for the coming together of the hearts [of the believers].