Afaman zuyyina lahu soo-o AAamalihi faraahu hasanan fa-inna Allaha yudillu man yashao (surah Fatir: 8)

Tafseer Tafheem-ul-Quran by Syed Abu-al-A'la Maududi

(35:8) (How *15 awful is the straying of the person) for whom his evil deed has been embellished so that it looks fair to him? *16 The fact is that Allah causes whomsoever He will to fall into error and shows the Right Way to whomsoever He will. So, (O Prophet), let not your life go to waste sorrowing over them. *17 Allah is well aware of all that they do. *18

Afaman zuyyina lahoo sooo`u `amalihee fara aahu hasanaa; fa innal laaha yudillu mai yashaaa`u wa yahdee mai yahaaa`u falaa tazhab nafsuka `alaihim hasaraat; innal laaha `aleemun bimaa yasna`oon

*15) Verses 3-7 were addressed to the common people. In this paragraph mention has been made of the standard-bearers of error and deviation, who were exerting their utmost to frustrate and defeat the mission of the Holy Prophet.
*16) That is, one kind of perverted person is he who commits evil but knows and understands that he is committing evil. Such a person can be reformed by counsel and advice, and sometimes his own conscience also pricks and brings him to the right path, for his habits only are perverted, not hIS mind But there is another kind of a person whose mentality has been perverted, who has lost the discrimination between good and evil, far whom the life of sin has become alluring and lustrous, who abhors good and takes evil for civilization and culture, who regards goodness and piety as things of the past, and sinfulness and wickedness as progressiveness, and for whom guidance becomes error and error guidance. Such a person is not amenable to any advice, any admonition. He neither takes warning from his own follies, nor listens to a well-wisher. It is useless to waste ones tube and energy for the reformation of such a person Instead, the inviter to the truth should turn his attention towards those whose consciences may still be alive and who may still be inclined to listen to the truth.
*17) The insertion of the words "Allah lends astray whomsoever He pleases and shows the Right Way to whomsoever He pleases", between the preceding and this sentence, clearly gives the meaning that Allah deprives, of the grace of guidance, those who become so perverted mentally, and leaves them to wander aimlessly in the ways in which they themselves wish to remain lost. After making the Holy Prophet realize this fact Allah exhorts him to the effect: "It is not within your power to bring such people to the right path; therefore, have patience in their regard. Just as Allah is indifferent about them, so should you also avoid being unduly anxious about their reformation."
Here, one should bear in mind two things very clearly. First, the people being mentioned here were not the conunon people, but the chiefs of Makkah. who were employing every falsehood, every fraud and every trick to defeat the mission of the Holy Prophet. These people were in fact not involved in any misunderstanding about the Holy Prophet. They knew full well what he was calling theta to and what were the evils and moral weaknesses which they themselves were striving to maintain. After knowing and understanding All this they had firmly resolved not to Iet him succeed in his object, and for this purpose they did not feel any hesitation in using any mean or petty device. Now, evidently the people who deliberately and after annual consultation invent a new falsehood every next day and spread it against a person, can deceive the whole world but as for themselves they know that they are the liars and that the person whom they have accused is free of every blame. Then, if the person against whom the false propaganda is being made also does not react and respond in a way opposed to truth and righteousness, the unjust people also cannot help realizing that their opponent is a truthful and honest man. If in spite of this the people do not feel ashamed of their misconduct and continue to oppose and resist the truth with falsehood. their conduct itself testifies that they are under Allah's curse and they can no longer discriminate between good and evil.
Secondly, if Allah had only meant to make His Prophet understand the supreme truth, He could have secretly made him aware of this. There was no need to proclaim it openly in the Revelation. To mention it in the Qur'an and to proclaim it to the world was in fact meant to warn the conunon people that the leaders and the religious guides whom they were following blindly were the people of perverted mentality. whose mean conduct was itself an evidence that they were under the curse of Allah.
*18) This sentence in itself contains the threat that a time is coming when Allah will punish them for their misdeeds. When a ruler says that he is fully aware of the misdeeds of a culprit, it does not only mean that the ruler has the knowledge of his misconduct, but it necessarily contains the warning that he will also punish him for this certainly.