It is reported on the authority of Anas that the Messenger of Allah ﷺ said: There are three qualities for which any one who is characterised by them will relish the savour of faith: that he loves man and he does not love him but for Allah's sake alone;
he is to whom Allah and His Messenger are dearer than all else;
he who prefers to be thrown into fire than to return to unbelief after Allah has rescued him out of it.

حَدَّثَنَا مُحَمَّدُ بْنُ الْمُثَنَّى، وَابْنُ، بَشَّارٍ قَالاَ حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ، حَدَّثَنَا شُعْبَةُ، قَالَ سَمِعْتُ قَتَادَةَ، يُحَدِّثُ عَنْ أَنَسٍ، قَالَ قَالَ رَسُولُ اللَّهِ ﷺ " ثَلاَثٌ مَنْ كُنَّ فِيهِ وَجَدَ طَعْمَ الإِيمَانِ مَنْ كَانَ يُحِبُّ الْمَرْءَ لاَ يُحِبُّهُ إِلاَّ لِلَّهِ وَمَنْ كَانَ اللَّهُ وَرَسُولُهُ أَحَبَّ إِلَيْهِ مِمَّا سِوَاهُمَا وَمَنْ كَانَ أَنْ يُلْقَى فِي النَّارِ أَحَبَّ إِلَيْهِ مِنْ أَنْ يَرْجِعَ فِي الْكُفْرِ بَعْدَ أَنْ أَنْقَذَهُ اللَّهُ مِنْهُ " .