Why a believer is called a believer
Al-Kāfi|Volume 8|Book 1|Chapter 161
مُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنْ مَرْوَكِ بْنِ عُبَيْدٍ عَنْ رِفَاعَةَ عَنْ أَبِي عَبْدِ اللَّهِ (عليه السلام) قَالَ قَالَ أَ تَدْرِي يَا رِفَاعَةُ لِمَ سُمِّيَ الْمُؤْمِنُ مُؤْمِناً قَالَ قُلْتُ لَا أَدْرِي قَالَ لِأَنَّهُ يُؤْمِنُ عَلَى اللَّهِ عَزَّ وَ جَلَّ فَيُجِيزُ [اللَّهُ] لَهُ أَمَانَهُ.
161. Muhammad Bin Yahya, from Ahmad Bin Muhammad, from Marouk Bin Ubeyd, from Rafa’at, who has narrated the following: Abu Abdullah عليه الصلاة والسلام having said: ‘Do you know, O Rafa’at, why the ‘الْمُؤْمِنُ’ Believer is called ‘Momin’?’ I said, ‘I do not know’. He عليه الصلاة والسلام said: ‘Because he entrusts himself to Allah عز وجل Mighty and Majestic, so Allah عز وجل Authorises safety for him’.
- Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (16/23)
- Ṣaḥīḥ al-Kāfī