Al-Kāfi

Hadith 57
trustworthinessmarriage
2ـ عَلِيٌّ عَنْ أَبِيهِ عَنِ ابْنِ أَبِي عُمَيْرٍ عَنِ الْعَلاءِ عَنْ مُحَمَّدِ بْنِ مُسْلِمٍ عَنْ أَحَدِهِمَا (عَلَيهِما السَّلام) قَالَ الإيمَانُ إِقْرَارٌ وَعَمَلٌ وَالإسْلامُ إِقْرَارٌ بِلا عَمَلٍ.
2. Ali has narrated from his father from ibn abu ’Umayr from al-‘Ala’ from Muhammad ibn Muslim from one of them (the two Imams) (a.s.) who has said the following: “Faith or belief is to affirm and act accordingly. Islam is just an affirmation.”
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī