1. Faith / Belief

١۔ كتاب الإيمان

Muslim > Chapter 1 > Section 13
مسلم > كتاب ١ > باب ١٣

1.13 Evidence that the one who is content with Allah as his Lord, Islam as his religion and Muhammad ﷺ as his prophet, then he is a believer, even if he commits major sins

١۔١٣ بَاب الدَّلِيلِ عَلَى أَنَّ مَنْ رَضِيَ بِاللَّهِ رَبًّا وَبِالْإِسْلَامِ دِينًا وَبِمُحَمَّدٍ رَسُولًا فَهُوَ مُؤْمِنٌ وَإِنْ ارْتَكَبَ الْمَعَاصِيَ الْكَبَائِرَ

muslim:34 – Muḥammad b. Yaḥyá b. Abū ʿUmar al-Makkī And Bishr b. al-Ḥakam > ʿAbd al-ʿAzīz Wahū Ibn Muḥammad al-Darāwardī > Yazīd b. al-Hād > Muḥammad b. Ibrāhīm > ʿĀmir b. Saʿd > al-ʿAbbās b. ʿAbd al-Muṭṭalib

He has found the taste of faith (iman) who is content with Allah as his Lord, with Islam as his religion (code of life) and with Muhammad ﷺ as his Prophet.  

مسلم:٣٤ – حَدَّثَنَا مُحَمَّدُ بْنُ يَحْيَى بْنِ أَبِي عُمَرَ الْمَكِّيُّ وَبِشْرُ بْنُ الْحَكَمِ قَالاَ حَدَّثَنَا عَبْدُ الْعَزِيزِ وَهُوَ ابْنُ مُحَمَّدٍ الدَّرَاوَرْدِيُّ عَنْ يَزِيدَ بْنِ الْهَادِ عَنْ مُحَمَّدِ بْنِ إِبْرَاهِيمَ عَنْ عَامِرِ بْنِ سَعْدٍ عَنِ الْعَبَّاسِ بْنِ عَبْدِ الْمُطَّلِبِ

أَنَّهُ سَمِعَ رَسُولَ اللَّهِ ﷺ يَقُولُ ذَاقَ طَعْمَ الإِيمَانِ مَنْ رَضِيَ بِاللَّهِ رَبًّا وَبِالإِسْلاَمِ دِينًا وَبِمُحَمَّدٍ رَسُولاً