Mishkat al-Masabih · Book 1 · Hadith 48
وَعَن معَاذ أَنَّهُ سَأَلَ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ عَنْ أَفْضَلِ الْإِيمَانِ قَالَ: «أَنْ تُحِبَّ لِلَّهِ وَتُبْغِضَ لِلَّهِ وَتُعْمِلَ لِسَانَكَ فِي ذِكْرِ اللَّهِ قَالَ وماذا يَا رَسُول الله قَالَ وَأَن تحب للنَّاس مَا تحب لنَفسك وَتَكْرَهُ لَهُمْ مَا تَكْرَهُ لِنَفْسِكَ» . رَوَاهُ أَحْمَدُ
He also said that he asked the Prophet (ﷺ) what was the most excellent aspect of faith, and received the reply, “That you should love for God’s sake, hate for God’s sake, and employ your tongue in making mention of God.”…