Al-Kāfi

Hadith 870
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3ـ عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنِ ابْنِ مَحْبُوبٍ عَنِ ابْنِ رِئَابٍ قَالَ سَمِعْتُ أَبَا عَبْدِ الله (عَلَيهِ السَّلام) يَقُولُ لأبِي بَصِيرٍ أَمَا وَالله لَوْ أَنِّي أَجِدُ مِنْكُمْ ثَلاثَةَ مُؤْمِنِينَ يَكْتُمُونَ حَدِيثِي مَا اسْتَحْلَلْتُ أَنْ أَكْتُمَهُمْ حَدِيثاً.
3. Ali ibn Ibrahim has narrated from his father from ibn Mahbub from ibn Ri’ab who has said the following: “I heard Abu ‘Abdillah (a.s.) saying to abu Basir, ‘By Allah were I to find three believers among you who keep our Hadith concealed I would not have considered it lawful to conceal any Hadith from them.’”
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī