Hadith 37

Sahih Bukhari

Book 2: Belief

Chapter 33

Faith increases and decreases

باب زِيَادَةِ الإِيمَانِ وَنُقْصَانِهِ

And the Statements of Allah جل جلاله, "We increased them in guidance." (V.18:13) "And the believers may increase in faith." (V.74:31) — And Allah تعالى said, "This day I have perfected your religion for you," (V.5:3) (The last Statement indicates that) if somebody leaves a part of (from) the perfection of the religion then his religion is incomplete.
وَقَوْلِ اللَّهِ تَعَالَى: {وَزِدْنَاهُمْ هُدًى}، {وَيَزْدَادَ الَّذِينَ آمَنُوا إِيمَانًا} وَقَالَ: {الْيَوْمَ أَكْمَلْتُ لَكُمْ دِينَكُمْ} فَإِذَا تَرَكَ شَيْئًا مِنَ الْكَمَالِ فَهُوَ نَاقِصٌ.
Sahih al-Bukhari 44
حَدَّثَنَا مُسْلِمُ بْنُ إِبْرَاهِيمَ، قَالَ حَدَّثَنَا هِشَامٌ، قَالَ حَدَّثَنَا قَتَادَةُ، عَنْ أَنَسٍ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ ‏"‏ يَخْرُجُ مِنَ النَّارِ مَنْ قَالَ لاَ إِلَهَ إِلاَّ اللَّهُ، وَفِي قَلْبِهِ وَزْنُ شَعِيرَةٍ مِنْ خَيْرٍ، وَيَخْرُجُ مِنَ النَّارِ مَنْ قَالَ لاَ إِلَهَ إِلاَّ اللَّهُ، وَفِي قَلْبِهِ وَزْنُ بُرَّةٍ مِنْ خَيْرٍ، وَيَخْرُجُ مِنَ النَّارِ مَنْ قَالَ لاَ إِلَهَ إِلاَّ اللَّهُ، وَفِي قَلْبِهِ وَزْنُ ذَرَّةٍ مِنْ خَيْرٍ ‏"‏‏.‏ قَالَ أَبُو عَبْدِ اللَّهِ قَالَ أَبَانُ حَدَّثَنَا قَتَادَةُ حَدَّثَنَا أَنَسٌ عَنِ النَّبِيِّ صلى الله عليه وسلم ‏"‏ مِنْ إِيمَانٍ ‏"‏‏.‏ مَكَانَ ‏"‏ مِنْ خَيْرٍ ‏"‏‏.‏
Anas:

The Prophet (ﷺ) said, "Whoever said "None has the right to be worshipped but Allah and has in his heart good (faith) equal to the weight of a barley grain will be taken out of Hell. And whoever said: "None has the right to be worshipped but Allah and has in his heart good (faith) equal to the weight of a wheat grain will be taken out of Hell. And whoever said, "None has the right to be worshipped but Allah and has in his heart good (faith) equal to the weight of an atom will be taken out of Hell."