Translation of the verse 50 from Surah Al-Qasas : Number of verses 88 - - page 391 - Part 20.
But if they answer you not (i.e. do not believe in your doctrine of Islamic Monotheism, nor follow you), then know that they only follow their own lusts. And who is more astray than one who follows his own lusts, without guidance from Allah? Verily! Allah guides not the people who are Zalimun (wrong-doers, disobedient to Allah, and polytheists).
But if they do not respond to you - then know that they only follow their [own] desires. And who is more astray than one who follows his desire without guidance from Allah? Indeed, Allah does not guide the wrongdoing people.
(28:50) Now, if they do not meet this demand of yours, you should know that they are, in fact, the followers of their own lusts. And who could go farther astray than the one who follows his own lusts, without guidance from Allah ? Allah does not at all guide such wicked people.