Belief
Ṣaḥīḥ al-Bukhārī 44
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
lā ilaha illā-Llāh, wafī qalbihi waznu shaʿīratin min khayrin, wayakhruju mina an-nāri man qāla lā ilaha illā-Llāh, wafī qalbihi waznu burratin min khayrin, wayakhruju mina an-nāri man qāla lā ilaha illā-Llāh, wafī qalbihi waznu dharratin min khayrin
Transliteration generated from the Arabic vowel marks
The full narration
Narrated 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
Source
Ṣaḥīḥ al-Bukhārī · 44
- Agreed upon as authentic (al-Bukhārī / Muslim)