 وبهذا الاسناد عن سليمان، عن داود بن كثير الرقّي قال: دخلت على أبي عبد الله عليه السلام فقلت له: جعلت فداك، قوله تعالى: (وَإِنّي لَغَفَّارٌ لِمَنْ تَابَ وَآمَنَ وَعَمِلَ صَالِحاً ثُمَّ اهْتَدَى،) فما هذا الهدى بعد التوبة والايمان والعمل الصالح؟ قال: فقال: معرفة الأئمّة ـ والله ـ إمام بعد إمام.
 (The same previous series of relaters)… from Sulaiman that Dawoud bin Kuthair ar-Raqqi said: When I was before Abu Abdullah , I said to him: Allah may make me your sacrifice. Regarding the Holy saying of Allah, "I am All-forgiving to him who repented, believed, and did righteous acts then followed the right guidance, (20:82)" what is that right guidance, which comes after repentance, faith, and the righteous acts? He  said: (This right guidance is) the acknowledgement of the Imams-one after the other.