أَنَّ مَا يُمْكِنُ أَنْ يُقَالَ هُوَ أَنْ يُحِبَّ الْمَرْءُ مَا يُحِبُّهُ اللَّهُ، وَيُبْغِضَ مَا يُبْغِضُهُ، وَأَنْ يَعْمَلَ بِأَوَامِرِهِ وَيَجْتَنِبَ نَوَاهِيَهُ، وَأَنْ يَكُونَ مَعَ الَّذِينَ يُحِبُّونَ اللَّهَ، وَيُظْهِرَ الْعَدَاوَةَ الشَّدِيدَةَ لِأَعْدَائِهِ. وَلِذَلِكَ كَانَ الْحُبُّ فِي اللَّهِ وَالْبُغْضُ فِي اللَّهِ مِنْ أَوْضَحِ عَلَامَاتِ الْإِيمَانِ.

A--- What can tell is that, one should love what is loved by Allah and dislike what is disliked by Him; he should act on His Orders and avoid His Prohibitions; he should be with those who love Allah, and show severe enmity to His enemies. That is why love and hatred for the sake of Allah are the most affirmed signs of Iman (Faith).