[٣/٢٠٠] الكافي: محمد بن عبدالله ومحمد بن يحيى جميعا، عن عبدالله بن جعفر الحميري قال: اجتمعت أنا والشيخ أبوعمرو رحمه الله عند أحمد بن إسحاق فغمزني أحمد بن إسحاق أن أسأله عن الخلف فقلت له: يا أبا عمرو إني اريد أن أسألك عن شئ … وقد أخبرني أبوعلي أحمد بن إسحاق عن أبي الحسن عليه السلام قال: سألته وقلت: من اعامل أو عمن آخذ وقول من أقبل؟ فقال له: العمري ثقتي فما ادى إليك عني فعني يؤدي وما قال لك عني فعني يقول، فاسمع له وأطع، فإنه الثقة المأمون، وأخبرني أبوعلي أنه سأل ابا محمد عليه السلام عن مثل ذلك، فقال له: العمري وابنه ثقتان، فما أديا إليك عني فعني يؤديان وما قالا لك فعني يقولان، فاسمع لهما وأطعمها فإنهما الثقتان المأمونان، فهذا قول إمامين قد مضيا فيك. قال: فخر أبوعمرو ساجدا وبكى …
3. [3/200] al-Kafi: Muhammad b. Abdallah and Muhammad b. Yahya from Abdallah b. Ja`far al-Himyari who said: We gathered – myself and the Shaykh Abu Amr رحمه الله at Ahmad b. Ishaq’s place. Ahmad b. Ishaq gestured at me me to ask him [Abu Amr] about the successor [the Mahdi], so I said to him: O Abu Amr, I want to ask you about something … and Abu Ali Ahmad b. Ishaq has informed me from Abi al-Hasan [al-Naqi] عليه السلام saying: I asked him [the Imam] and said: whom do I emulate or from whom do I take? whose words do I accept? So he [al-Naqi] said to him: ‘al-Amri is my trustee, so what he gives you on my behalf then his giving is truly on my behalf, and what he says to you on my behalf then his saying is truly on my behalf, so listen to him and obey him, for he is both trustworthy and reliable’. Abu Ali [Ahmad b. Ishaq] also informed me that he had asked Aba Muhammad [al-Askari] عليه السلام about the same matter so he said to him: ‘al-Amri and his son are two trustees, so what they give you on my behalf then their giving is truly on my behalf, and what they say to you on my behalf then their saying is truly on my behalf, so listen to them and obey them, for they are both trustworthy and reliable’. These are the words of the two Imams said previously about you [O Abu Amr]. He said: so Abu Amr prostrated himself and cried … 