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Surah 6. Al-An'am
Ayah 68 - 70
68وَإِذَا رَأَيْتَ ٱلَّذِينَ يَخُوضُونَ فِىٓ ءَايَـٰتِنَا فَأَعْرِضْ عَنْهُمْ حَتَّىٰ يَخُوضُوا۟ فِى حَدِيثٍ غَيْرِهِۦ ۚ وَإِمَّا يُنسِيَنَّكَ ٱلشَّيْطَـٰنُ فَلَا تَقْعُدْ بَعْدَ ٱلذِّكْرَىٰ مَعَ ٱلْقَوْمِ ٱلظَّـٰلِمِينَ
69وَمَا عَلَى ٱلَّذِينَ يَتَّقُونَ مِنْ حِسَابِهِم مِّن شَىْءٍ وَلَـٰكِن ذِكْرَىٰ لَعَلَّهُمْ يَتَّقُونَ
70وَذَرِ ٱلَّذِينَ ٱتَّخَذُوا۟ دِينَهُمْ لَعِبًا وَلَهْوًا وَغَرَّتْهُمُ ٱلْحَيَوٰةُ ٱلدُّنْيَا ۚ وَذَكِّرْ بِهِۦٓ أَن تُبْسَلَ نَفْسٌۢ بِمَا كَسَبَتْ لَيْسَ لَهَا مِن دُونِ ٱللَّهِ وَلِىٌّ وَلَا شَفِيعٌ وَإِن تَعْدِلْ كُلَّ عَدْلٍ لَّا يُؤْخَذْ مِنْهَآ ۗ أُو۟لَـٰٓئِكَ ٱلَّذِينَ أُبْسِلُوا۟ بِمَا كَسَبُوا۟ ۖ لَهُمْ شَرَابٌ مِّنْ حَمِيمٍ وَعَذَابٌ أَلِيمٌۢ بِمَا كَانُوا۟ يَكْفُرُونَ
[68-70] And, O Muhammad, when you see that people are finding fault with Our Revelations, withdraw from them till they get engaged in some other talk; and, if ever Satan causes you to forget this,44 quit the company of such unjust people when you realize your mistake. Though the pious people are not in any way accountable for them, yet it is their duty to admonish them; perhaps they may refrain from their evil ways.45 And leave alone those who have taken their faith as a sport and pastime and have been deluded by the life of this world; nevertheless, go on admonishing them by reciting the Qur'an to them lest any person should be seized because of his own deeds, and that too at the time, when there would be no protector, no helper and no intercessor to rescue him from Allah, and when no conceivable amount of ransom would be accepted from him; this is because such people shall be seized in consequence of what they themselves had earned; they shall get boiling water to drink and a painful torment to suffer for their rejection of the Truth.
44That is, "If you ever forget this instruction and keep sitting in the company of such people."
45Here very important practical instructions have been given to the pious people. Their first and foremost duty is to save themselves from any disobedience of Allah; they should not worry unnecessarily about the disobedient people, for they are not responsible for their disobedience. They should not, therefore, impose it upon themselves as an obligation that they have to convince them anyhow by argument and to refute their absurd objections. Their only duty is to present the Truth before them. Then, if they do not accept it, the pious people should not waste their time and energy by entering into useless polemical disputes, discussions and argumentations with the disbelievers. Instead, they should spend their time and energy in educating and training and reforming those who are sincere seekers after the Truth.