Sahih Muslim , Hadith 43

It is reported on the authority of Anas that the Prophet of Allah (may peace and blessings be upon him ) said: There are three qualities for which anyone who is characterised by them will relish the sweetness of faith: he to whom Allah and His Messenger are dearer than all else; he who loves a man for Allah's sake alone; and he who has as great an abhorrence of returning to unbelief after Allah has rescued him from it as he has of being cast into Hell.

حَدَّثَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، وَمُحَمَّدُ بْنُ يَحْيَى بْنِ أَبِي عُمَرَ، وَمُحَمَّدُ بْنُ بَشَّارٍ، جَمِيعًا عَنِ الثَّقَفِيِّ، - قَالَ ابْنُ أَبِي عُمَرَ حَدَّثَنَا عَبْدُ الْوَهَّابِ، - عَنْ أَيُّوبَ، عَنْ أَبِي قِلاَبَةَ، عَنْ أَنَسٍ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ ‏ "‏ ثَلاَثٌ مَنْ كُنَّ فِيهِ وَجَدَ بِهِنَّ حَلاَوَةَ الإِيمَانِ مَنْ كَانَ اللَّهُ وَرَسُولُهُ أَحَبَّ إِلَيْهِ مِمَّا سِوَاهُمَا وَأَنْ يُحِبَّ الْمَرْءَ لاَ يُحِبُّهُ إِلاَّ لِلَّهِ وَأَنْ يَكْرَهَ أَنْ يَعُودَ فِي الْكُفْرِ بَعْدَ أَنْ أَنْقَذَهُ اللَّهُ مِنْهُ كَمَا يَكْرَهُ أَنْ يُقْذَفَ فِي النَّارِ ‏" ‏ ‏.‏

sunnah.com

It is reported on the authority of Anas that the Messenger of Allah 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 صلى الله عليه وسلم ‏ "‏ 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 ‏" ‏ ‏.‏

sunnah.com

A similar hadith has been reported on the authority of Anas (with another chain of transmitters) with the exception of these words: that he again becomes a Jew or a Christian.

حَدَّثَنَا إِسْحَاقُ بْنُ مَنْصُورٍ، أَنْبَأَنَا النَّضْرُ بْنُ شُمَيْلٍ، أَنْبَأَنَا حَمَّادٌ، عَنْ ثَابِتٍ، عَنْ أَنَسٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم بِنَحْوِ حَدِيثِهِمْ غَيْرَ أَنَّهُ قَالَ ‏ "‏ مِنْ أَنْ يَرْجِعَ يَهُودِيًّا أَوْ نَصْرَانِيًّا ‏" ‏ ‏.‏

sunnah.com