٢ـ عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنِ ابْنِ أَبِي عُمَيْرٍ عَنْ عَلِيِّ بْنِ يَقْطِينٍ عَنْ أَبِي الْحَسَنِ مُوسَى (عَلَيهِ السَّلام) قَالَ قُلْتُ لَهُ إِنِّي قَدْ أَشْفَقْتُ مِنْ دَعْوَةِ أَبِي عَبْدِ الله (عَلَيهِ السَّلام) عَلَى يَقْطِينٍ وَمَا وَلَدَ فَقَالَ يَا أَبَا الْحَسَنِ لَيْسَ حَيْثُ تَذْهَبُ إِنَّمَا الْمُؤْمِنُ فِي صُلْبِ الْكَافِرِ بِمَنْزِلَةِ الْحَصَاةِ فِي اللَّبِنَةِ يَجِي‏ءُ الْمَطَرُ فَيَغْسِلُ اللَّبِنَةَ وَلا يَضُرُّ الْحَصَاةَ شَيْئاً. 
2. Ali ibn Ibrahim has narrated from his father from Ibn Abi ‘Umayr from Ali ibn Yaqtin from abu al-Hassan Musa  who has said the following: “Once I said to the Imam, ‘I am afraid of the prayer of Abu ‘Abdillah  against Yaqtin and his offspring.’ The Imam said, ‘O abu al-Hassan, it is not as you think. A believer in the back of an unbeliever is like a small piece of stone in a brick. Rain can wash away the brick but it never harms the solid piece of stone.’” 